Hello world/Standard error: Difference between revisions
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{{task|Basic language learning}} |
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{{task|Basic language learning}}{{selection|Short Circuit|Console Program Basics}}A common practice in computing is to send error messages to a different output stream than [[User Output - text|normal text console messages]]. The normal messages print to what is called "standard output" or "standard out". The error messages print to "standard error". This separation can be used to redirect error messages to a different place than normal messages. |
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{{selection|Short Circuit|Console Program Basics}} |
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[[Category:Streams]] |
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{{omit from|Applesoft BASIC}} |
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{{omit from|bc|Always prints to standard output.}} |
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{{omit from|Brainf***}} |
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{{omit from|dc|Always prints to standard output.}} |
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{{omit from|EasyLang|EasyLang has an error variable, but it cannot be set manually. And it always prints to standard output.}} |
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{{omit from|GUISS|Cannot customize error messages}} |
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{{omit from|Integer BASIC}} |
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{{omit from|Jack|No other output stream available.}} |
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{{omit from|SQL PL|It only prints in standard output. There is no way to print in standard error. Not even with "BEGIN SIGNAL SQLSTATE 'ABCDE' SET MESSAGE_TEXT = 'Hello World!'; END"}} <!-- The only way is with an external function in Java or C that prints in Standard Error --> |
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{{omit from|TI-83 BASIC|Same reason as TI-89.}} |
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{{omit from|TI-89 BASIC|no analogue to stderr, unless you count graph display vs. program IO}} |
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{{omit from|Unlambda|No concept of standard error (or alternate output streams in general).}} |
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A common practice in computing is to send error messages |
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Show how to print a message to standard error by printing "Goodbye, World!" on that stream. |
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to a different output stream than [[User Output - text|normal text console messages]]. |
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The normal messages print to what is called "standard output" or "standard out". |
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The error messages print to "standard error". |
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This separation can be used to redirect error messages to a different place than normal messages. |
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;Task: |
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Show how to print a message to standard error by printing '''Goodbye, World!''' on that stream. |
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<br><br> |
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=={{header|11l}}== |
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{{trans|Python}} |
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<syntaxhighlight lang="11l">:stderr.write("Goodbye, World!\n")</syntaxhighlight> |
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=={{header|4DOS Batch}}== |
=={{header|4DOS Batch}}== |
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<lang |
<syntaxhighlight lang="4dos">echoerr Goodbye, World!</syntaxhighlight> |
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=={{header|AArch64 Assembly}}== |
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<syntaxhighlight lang="arm_assembly">.equ STDERR, 2 |
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.equ SVC_WRITE, 64 |
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.equ SVC_EXIT, 93 |
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.text |
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.global _start |
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_start: |
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stp x29, x30, [sp, -16]! |
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mov x0, #STDERR |
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ldr x1, =msg |
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mov x2, 15 |
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mov x8, #SVC_WRITE |
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mov x29, sp |
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svc #0 // write(stderr, msg, 15); |
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ldp x29, x30, [sp], 16 |
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mov x0, #0 |
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mov x8, #SVC_EXIT |
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svc #0 // exit(0); |
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msg: .ascii "Goodbye World!\n"</syntaxhighlight> |
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=={{header|Ada}}== |
=={{header|Ada}}== |
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< |
<syntaxhighlight lang="ada">with Ada.Text_IO; use Ada.Text_IO; |
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procedure Goodbye_World is |
procedure Goodbye_World is |
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begin |
begin |
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Put_Line (Standard_Error, "Goodbye, World!"); |
Put_Line (Standard_Error, "Goodbye, World!"); |
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end Goodbye_World;</ |
end Goodbye_World;</syntaxhighlight> |
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=={{header|Agena}}== |
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<syntaxhighlight lang="agena">io.write( io.stderr, "Goodbye, World!\n" )</syntaxhighlight> |
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=={{header|Aime}}== |
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<syntaxhighlight lang="aime">v_text("Goodbye, World!\n");</syntaxhighlight> |
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=={{header|ALGOL 68}}== |
=={{header|ALGOL 68}}== |
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Line 23: | Line 83: | ||
{{works with|ELLA ALGOL 68|Any (with appropriate job cards) - tested with release [http://sourceforge.net/projects/algol68/files/algol68toc/algol68toc-1.8.8d/algol68toc-1.8-8d.fc9.i386.rpm/download 1.8-8d] - note that printf and putf were not ported into ELLA's libraries.}} |
{{works with|ELLA ALGOL 68|Any (with appropriate job cards) - tested with release [http://sourceforge.net/projects/algol68/files/algol68toc/algol68toc-1.8.8d/algol68toc-1.8-8d.fc9.i386.rpm/download 1.8-8d] - note that printf and putf were not ported into ELLA's libraries.}} |
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< |
<syntaxhighlight lang="algol68">main:( |
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put(stand error, ("Goodbye, World!", new line)) |
put(stand error, ("Goodbye, World!", new line)) |
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)</ |
)</syntaxhighlight> |
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{{out}} |
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Output: |
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<pre> |
<pre> |
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Goodbye, World! |
Goodbye, World! |
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Line 32: | Line 92: | ||
=={{header|Argile}}== |
=={{header|Argile}}== |
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< |
<syntaxhighlight lang="argile">use std |
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eprint "Goodbye, World!"</ |
eprint "Goodbye, World!"</syntaxhighlight> |
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or |
or |
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< |
<syntaxhighlight lang="argile">use std |
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eprintf "Goodbye, World!\n"</ |
eprintf "Goodbye, World!\n"</syntaxhighlight> |
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or |
or |
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< |
<syntaxhighlight lang="argile">use std |
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fprintf stderr "Goodbye, World!\n"</ |
fprintf stderr "Goodbye, World!\n"</syntaxhighlight> |
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=={{header|ARM Assembly}}== |
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{{works with|as|Raspberry Pi}} |
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<syntaxhighlight lang="arm assembly"> |
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/* ARM assembly Raspberry PI */ |
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/* program hellowordLP.s */ |
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.data |
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szMessage: .asciz "Goodbye world. \n " @ error message |
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.equ LGMESSAGE, . - szMessage @ compute length of message |
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.text |
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.global main |
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main: |
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mov r0, #2 @ output error linux |
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ldr r1, iAdrMessage @ adresse of message |
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mov r2, #LGMESSAGE @ sizeof(message) |
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mov r7, #4 @ select system call 'write' |
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swi #0 @ perform the system call |
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mov r0, #0 @ return code |
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mov r7, #1 @ request to exit program |
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swi #0 @ perform the system call |
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iAdrMessage: .int szMessage |
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</syntaxhighlight> |
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=={{header|Arturo}}== |
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<syntaxhighlight lang="arturo">panic "Goodbye, World!"</syntaxhighlight> |
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=={{header|ATS}}== |
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<syntaxhighlight lang="ats">implement main0 () = fprint (stderr_ref, "Goodbye, World!\n")</syntaxhighlight> |
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=={{header|AutoHotkey}}== |
=={{header|AutoHotkey}}== |
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requires [http://github.com/tinku99/ahkdll/tree/master AutoHotkey_N] |
requires [http://github.com/tinku99/ahkdll/tree/master AutoHotkey_N] |
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implementation. |
implementation. |
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< |
<syntaxhighlight lang="autohotkey">; c:\> autohotkey.exe stderr.ahk 2> error.txt |
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FileAppend, Goodbye`, World!, stderr ; requires AutoHotkey_N</ |
FileAppend, Goodbye`, World!, stderr ; requires AutoHotkey_N</syntaxhighlight> |
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Or with the current AutoHotkey_L: |
Or with the current AutoHotkey_L: |
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{{works with|AutoHotkey_L}} |
{{works with|AutoHotkey_L}} |
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(documentation on this behavior: http://www.autohotkey.net/~Lexikos/AutoHotkey_L/docs/commands/FileAppend.htm) |
(documentation on this behavior: http://www.autohotkey.net/~Lexikos/AutoHotkey_L/docs/commands/FileAppend.htm) |
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< |
<syntaxhighlight lang="autohotkey">FileAppend, Goodbye`, World!, *</syntaxhighlight> |
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=={{header|AutoIt}}== |
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<syntaxhighlight lang="autoit">ConsoleWriteError("Goodbye, World!" & @CRLF)</syntaxhighlight> |
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=={{header|Avail}}== |
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<syntaxhighlight lang="avail">Error: "Goodbye, World!";</syntaxhighlight> |
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=={{header|AWK}}== |
=={{header|AWK}}== |
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To print a message to standard error, |
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Pipe through a shell command: |
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pipe it through a shell command: |
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< |
<syntaxhighlight lang="awk">BEGIN { |
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print "Goodbye, World!"| "cat 1>&2" |
print "Goodbye, World!"| "cat 1>&2" |
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}</ |
}</syntaxhighlight> |
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Or write to /dev/stderr: |
Or write to /dev/stderr: |
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Line 64: | Line 163: | ||
{{works with|mawk}} |
{{works with|mawk}} |
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{{works with|nawk}} |
{{works with|nawk}} |
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< |
<syntaxhighlight lang="awk">BEGIN { |
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print "Goodbye, World!" > "/dev/stderr" |
print "Goodbye, World!" > "/dev/stderr" |
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}</ |
}</syntaxhighlight> |
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With ''gawk'', ''mawk'' and ''nawk'': a special feature |
With ''gawk'', ''mawk'' and ''nawk'': a special feature |
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associates "/dev/stderr" with standard error. |
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The manuals of ''gawk'' and ''mawk'' describe this feature; |
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''nawk'' also has this feature. |
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Other implementations might try to open /dev/stderr as a file. |
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Other implementations might try to open /dev/stderr as a file. Some Unix clones, like [[BSD]], have a /dev/stderr device node that duplicates standard error, so this code would still work. Some systems have no such device node, so this code would fail. We recommend "cat 1>&2", which is more portable, and works with any Unix clone. |
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Some Unix clones, like [[BSD]], have a /dev/stderr device node |
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that duplicates standard error, so this code would still work. |
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=={{header|Batch File}}== |
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Some systems have no such device node, so this code would fail. |
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<lang dos>1>&2 echo Goodbye, World!</lang> |
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We recommend "cat 1>&2", which is more portable, and works with any Unix clone. |
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The redirection operator <code>1>&2</code> causes all output on stream 1 (standard out) to be redirected to stream 2 (standard error). The redirection can be moved to the end of the line, too. |
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=={{header|BASIC}}== |
=={{header|BASIC}}== |
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==={{header|Applesoft BASIC}}=== |
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<syntaxhighlight lang="basic">REM FILE-BASED OUTPUT REDIRECTION |
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0 D$ = CHR$ (4):F$ = "DEV/STDERR": PRINT D$"OPEN"F$: PRINT D$"CLOSE"F$: PRINT D$"APPEND"F$: PRINT D$"WRITE"F$ |
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1 PRINT "GOODBYE, WORLD!" |
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2 PRINT D$"CLOSE"F$</syntaxhighlight><syntaxhighlight lang="basic">REM OUTPUT ROUTINE REDIRECTION |
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3 FOR I = 768 TO 802: READ B: POKE I,B: NEXT : POKE 54,0: POKE 55,3: CALL 1002: DATA 72,173,34,3,208,8,169,191,141,34,3,32,240,253,104,201,141,208,12,169,0,141,34,3,169,135,32,240,253,169,141,76,240,253,0 |
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4 O$ = CHR$ (111):D$ = CHR$ (100): PRINT "G" + O$ + O$ + D$ + CHR$ (98) + CHR$ (121) + CHR$ (101) + ", W" + O$ + CHR$ (114) + CHR$ (108) + D$ + "!" |
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5 POKE 54,240: POKE 55,253: CALL 1002</syntaxhighlight> |
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==={{header|BaCon}}=== |
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<syntaxhighlight lang="freebasic">EPRINT "Goodbye, World!"</syntaxhighlight> |
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==={{header| |
==={{header|BASIC256}}=== |
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<syntaxhighlight lang="basic256">onerror errortrap |
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throwerror 99 |
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end |
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errortrap: |
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print "Goodbye World!" |
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return</syntaxhighlight> |
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==={{header|Chipmunk Basic}}=== |
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{{works with|Chipmunk Basic|3.6.4}} |
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<syntaxhighlight lang="qbasic">10 cls |
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20 on error goto 50 |
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30 error 99 : we force an error |
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40 end |
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50 rem ManejoErrores |
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60 print "Goodbye World!" |
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70 cont</syntaxhighlight> |
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==={{header|QBasic}}=== |
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<syntaxhighlight lang="basic">ON ERROR GOTO ManejoErrores |
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ERROR 99 |
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END |
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ManejoErrores: |
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PRINT "Googbye World!" |
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RESUME</syntaxhighlight> |
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==={{header|ZX Spectrum Basic}}=== |
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On the ZX Spectrum, standard error is on stream 1: |
On the ZX Spectrum, standard error is on stream 1: |
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<syntaxhighlight lang="zxbasic">10 PRINT #1;"Goodbye, World!" |
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<lang zxbasic> |
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20 PAUSE 50: REM allow time for the user to see the error message</syntaxhighlight> |
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10 PRINT #1;"Goodbye, World!" |
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20 PAUSE 5: REM allow time for the user to see the error message |
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=={{header|Batch File}}== |
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</lang> |
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<syntaxhighlight lang="dos">1>&2 echo Goodbye, World!</syntaxhighlight> |
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The redirection operator <code>1>&2</code> causes all output on stream 1 (standard out) to be redirected to stream 2 (standard error). |
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The redirection can be moved to the end of the line, too. |
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=={{header|BBC BASIC}}== |
=={{header|BBC BASIC}}== |
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{{works with|BBC BASIC for Windows}} |
{{works with|BBC BASIC for Windows}} |
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The program must be compiled as a console application for this to work. |
The program must be compiled as a console application for this to work. |
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< |
<syntaxhighlight lang="bbcbasic"> STD_ERROR_HANDLE = -12 |
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SYS "GetStdHandle", STD_ERROR_HANDLE TO @hfile%(1) |
SYS "GetStdHandle", STD_ERROR_HANDLE TO @hfile%(1) |
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PRINT #13, "Goodbye, World!" |
PRINT #13, "Goodbye, World!" |
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QUIT</ |
QUIT</syntaxhighlight> |
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=={{header|Blade}}== |
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<syntaxhighlight lang="blade">import io |
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io.stderr.write('Goodbye, World!')</syntaxhighlight> |
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=={{header|C}}== |
=={{header|C}}== |
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Unlike puts(), fputs() does not append a terminal newline. |
Unlike puts(), fputs() does not append a terminal newline. |
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< |
<syntaxhighlight lang="c">#include <stdio.h> |
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int main() |
int main() |
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Line 105: | Line 251: | ||
return 0; |
return 0; |
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}</ |
}</syntaxhighlight> |
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=={{header|C sharp|C#}}== |
=={{header|C sharp|C#}}== |
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< |
<syntaxhighlight lang="csharp">static class StdErr |
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{ |
{ |
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static void Main(string[] args) |
static void Main(string[] args) |
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Line 113: | Line 260: | ||
Console.Error.WriteLine("Goodbye, World!"); |
Console.Error.WriteLine("Goodbye, World!"); |
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} |
} |
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}</ |
}</syntaxhighlight> |
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=={{header|C++}}== |
=={{header|C++}}== |
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< |
<syntaxhighlight lang="cpp">#include <iostream> |
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int main() { |
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using std::cerr; |
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std::cerr << "Goodbye, World!\n"; |
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using std::endl; |
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}</syntaxhighlight> |
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=={{header|Clojure}}== |
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int main () { |
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<syntaxhighlight lang="lisp">(binding [*out* *err*] |
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cerr << "Goodbye, World!" << endl; |
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(println "Goodbye, world!"))</syntaxhighlight> |
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=={{header|CLU}}== |
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return cerr.bad(); |
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<syntaxhighlight lang="clu">start_up = proc () |
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}</lang> |
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stream$putl(stream$error_output(), "Goodbye, World!") |
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end start_up</syntaxhighlight> |
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=={{header|Clojure}}== |
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<lang lisp>(binding [*out* *err*] |
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(println "Goodbye, world!"))</lang> |
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=={{header|CMake}}== |
=={{header|CMake}}== |
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Most messages go to standard error. |
Most messages go to standard error. |
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< |
<syntaxhighlight lang="cmake">message("Goodbye, World!")</syntaxhighlight> |
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The message cannot be a keyword; <code>message("STATUS")</code> never prints "STATUS", but <code>message("" "STATUS")</code> does work. |
The message cannot be a keyword; <code>message("STATUS")</code> never prints "STATUS", but <code>message("" "STATUS")</code> does work. |
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Line 140: | Line 287: | ||
=={{header|COBOL}}== |
=={{header|COBOL}}== |
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Using fixed format. |
Using fixed format. |
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{{works with| |
{{works with|OpenCOBOL}} |
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< |
<syntaxhighlight lang="cobol"> program-id. ehello. |
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procedure division. |
procedure division. |
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display "Goodbye, world!" upon syserr. |
display "Goodbye, world!" upon syserr. |
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stop run. |
stop run.</syntaxhighlight> |
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</lang> |
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=={{header|CoffeeScript}}== |
=={{header|CoffeeScript}}== |
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{{trans|JavaScript}} |
{{trans|JavaScript}} |
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{{works with|Node.js}} |
{{works with|Node.js}} |
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< |
<syntaxhighlight lang="coffeescript">console.warn "Goodbye, World!"</syntaxhighlight> |
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=={{header|Common Lisp}}== |
=={{header|Common Lisp}}== |
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< |
<syntaxhighlight lang="lisp">(format *error-output* "Goodbye, world!~%")</syntaxhighlight> |
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=={{header|D}}== |
=={{header|D}}== |
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< |
<syntaxhighlight lang="d">import std.stdio; |
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void main () { |
void main () { |
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stderr.writeln("Goodbye, World!"); |
stderr.writeln("Goodbye, World!"); |
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}</ |
}</syntaxhighlight> |
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===Alternative Version== |
===Alternative Version=== |
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{{libheader|tango}} |
{{libheader|tango}} |
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< |
<syntaxhighlight lang="d">import tango.io.Stdout; |
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void main () { |
void main () { |
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Stderr("Goodbye, World!").newline; |
Stderr("Goodbye, World!").newline; |
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}</ |
}</syntaxhighlight> |
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=={{header|Dart}}== |
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<syntaxhighlight lang="dart">import 'dart:io'; |
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void main() { |
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stderr.writeln('Goodbye, World!'); |
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}</syntaxhighlight> |
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=={{header|Delphi}}== |
=={{header|Delphi}}== |
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< |
<syntaxhighlight lang="delphi">program Project1; |
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{$APPTYPE CONSOLE} |
{$APPTYPE CONSOLE} |
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Line 178: | Line 331: | ||
begin |
begin |
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WriteLn(ErrOutput, 'Goodbye, World!'); |
WriteLn(ErrOutput, 'Goodbye, World!'); |
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end.</ |
end.</syntaxhighlight> |
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=={{header|dt}}== |
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<syntaxhighlight lang="dt">"Goodbye, World!" epl</syntaxhighlight> |
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=={{header|Dylan.NET}}== |
=={{header|Dylan.NET}}== |
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Line 184: | Line 340: | ||
{{works with|Mono|2.6.7}} |
{{works with|Mono|2.6.7}} |
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{{works with|Mono|2.10.x}} |
{{works with|Mono|2.10.x}} |
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{{works with|Mono|3.x.y}} |
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{{works with|.NET|3.5}} |
{{works with|.NET|3.5}} |
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{{works with|.NET|4.0}} |
{{works with|.NET|4.0}} |
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{{works with|.NET|4.5}} |
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One Line version: |
One Line version: |
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< |
<syntaxhighlight lang="dylan.net">Console::get_Error()::WriteLine("Goodbye World!")</syntaxhighlight> |
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Goodbye World Program: |
Goodbye World Program: |
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<syntaxhighlight lang="dylan.net"> |
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<lang Dylan.NET> |
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//compile using the new dylan.NET v, 11. |
//compile using the new dylan.NET v, 11.5.1.2 or later |
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//use mono to run the compiler |
//use mono to run the compiler |
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#refstdasm mscorlib.dll |
#refstdasm mscorlib.dll |
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Line 199: | Line 357: | ||
ver 1.1.0.0 |
ver 1.1.0.0 |
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class public |
class public Program |
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method public static void main() |
method public static void main() |
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Line 206: | Line 364: | ||
end class |
end class |
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</syntaxhighlight> |
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</lang> |
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=={{header|Déjà Vu}}== |
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<syntaxhighlight lang="dejavu">!write-fragment!stderr !encode!utf-8 "Goodbye, World!\n"</syntaxhighlight> |
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=={{header|E}}== |
=={{header|E}}== |
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< |
<syntaxhighlight lang="e">stderr.println("Goodbye, World!")</syntaxhighlight> |
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=={{header|Elixir}}== |
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<syntaxhighlight lang="elixir">IO.puts :stderr, "Goodbye, World!"</syntaxhighlight> |
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=={{header|Emacs Lisp}}== |
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In batch mode, <code>message</code> actually prints to standard error: |
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<syntaxhighlight lang="lisp">(message "Goodbye, World!")</syntaxhighlight> |
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For greater control, <code>princ</code> can be used with a special printing function: |
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<syntaxhighlight lang="lisp">(princ "Goodbye, World!\n" 'external-debugging-output)</syntaxhighlight> |
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=={{header|EMal}}== |
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<syntaxhighlight lang="emal">logLine("Goodbye, World!")</syntaxhighlight> |
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<syntaxhighlight lang="emal">log("Goodbye, World!")</syntaxhighlight> |
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=={{header|Erlang}}== |
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<syntaxhighlight lang="erlang">io:put_chars(standard_error, "Goodbye, World!\n").</syntaxhighlight> |
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=={{header|Euphoria}}== |
=={{header|Euphoria}}== |
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< |
<syntaxhighlight lang="euphoria">puts(2,"Goodbye, world!\n") -- 2 means output to 'standard error'</syntaxhighlight> |
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=={{header|F_Sharp|F#}}== |
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<syntaxhighlight lang="fsharp">eprintfn "%s" "Goodbye, World!"</syntaxhighlight> |
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or you can use the .Net classes |
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<syntaxhighlight lang="fsharp">System.Console.Error.WriteLine("Goodbye, World!");</syntaxhighlight> |
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=={{header|Factor}}== |
=={{header|Factor}}== |
||
Start Factor in a terminal for this |
Start Factor in a terminal for this: |
||
< |
<syntaxhighlight lang="factor">error-stream get [ "Goodbye, World! bbl, crashing" print flush ] with-output-stream*</syntaxhighlight> |
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=={{header|Fantom}}== |
=={{header|Fantom}}== |
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< |
<syntaxhighlight lang="fantom"> |
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class Main |
class Main |
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{ |
{ |
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Line 229: | Line 415: | ||
} |
} |
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} |
} |
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</syntaxhighlight> |
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</lang> |
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=={{header|Forth}}== |
=={{header|Forth}}== |
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{{works with|GNU Forth}} |
{{works with|GNU Forth}} |
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< |
<syntaxhighlight lang="forth">outfile-id |
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stderr to outfile-id |
stderr to outfile-id |
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." Goodbye, World!" cr |
." Goodbye, World!" cr |
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to outfile-id</ |
to outfile-id</syntaxhighlight> |
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=={{header|Fortran}}== |
=={{header|Fortran}}== |
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Normally standard error is associated with the unit 0 |
Normally standard error is associated with the unit 0 |
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but this could be different for different vendors. |
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Therefore since Fortran 2003 there's an intrinsic module |
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which defines the parameter ERROR_UNIT. |
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< |
<syntaxhighlight lang="fortran">program StdErr |
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! Fortran 2003 |
! Fortran 2003 |
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use iso_fortran_env |
use iso_fortran_env |
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Line 250: | Line 439: | ||
write (ERROR_UNIT, *) "Goodbye, World!" |
write (ERROR_UNIT, *) "Goodbye, World!" |
||
end program StdErr</ |
end program StdErr</syntaxhighlight> |
||
=={{header| |
=={{header|FreeBASIC}}== |
||
<syntaxhighlight lang="freebasic">' FB 1.05.0 Win64 |
|||
<lang fsharp>eprintfn "%s" "Goodbye, World!"</lang> |
|||
or you can use the .Net classes |
|||
Open Err As #1 |
|||
<lang fsharp>System.Console.Error.WriteLine("Goodbye, World!");</lang> |
|||
Print #1, "Goodbye World!" |
|||
Close #1 |
|||
Sleep</syntaxhighlight> |
|||
=={{header|Frink}}== |
|||
<syntaxhighlight lang="frink"> |
|||
staticJava["java.lang.System","err"].println["Goodbye, World!"] |
|||
</syntaxhighlight> |
|||
=={{header|Genie}}== |
|||
<syntaxhighlight lang="genie">[indent=4] |
|||
/* |
|||
Hello, to Standard error, in Genie |
|||
valac helloStderr.gs |
|||
*/ |
|||
init |
|||
stderr.printf("%s\n", "Goodbye, World!")</syntaxhighlight> |
|||
{{out}} |
|||
<pre>prompt$ ./helloStderr | wc |
|||
Goodbye, World! |
|||
0 0 0</pre> |
|||
=={{header|Go}}== |
=={{header|Go}}== |
||
Built in println now goes to stderr. |
Built in println now goes to stderr. |
||
< |
<syntaxhighlight lang="go">package main |
||
func main() { println("Goodbye, World!") }</ |
func main() { println("Goodbye, World!") }</syntaxhighlight> |
||
but the builtin print() and println() functions are not guaranteed to stay in the language. So you should probably use |
but the builtin print() and println() functions are not guaranteed to stay in the language. So you should probably use |
||
< |
<syntaxhighlight lang="go">package main |
||
import ("fmt"; "os") |
import ("fmt"; "os") |
||
func main() { fmt.Fprintln(os.Stderr, "Goodbye, World!") }</ |
func main() { fmt.Fprintln(os.Stderr, "Goodbye, World!") }</syntaxhighlight> |
||
=={{header|Groovy}}== |
=={{header|Groovy}}== |
||
< |
<syntaxhighlight lang="groovy">System.err.println("Goodbye, World!")</syntaxhighlight> |
||
=={{header|Haskell}}== |
=={{header|Haskell}}== |
||
< |
<syntaxhighlight lang="haskell">import System.IO |
||
main = hPutStrLn stderr "Goodbye, World!"</ |
main = hPutStrLn stderr "Goodbye, World!"</syntaxhighlight> |
||
=={{header|Huginn}}== |
|||
<syntaxhighlight lang="huginn">#! /bin/sh |
|||
exec huginn --no-argv -E "${0}" "${@}" |
|||
#! huginn |
|||
import OperatingSystem as os; |
|||
main() { |
|||
os.stderr().write( "Goodbye, World!\n" ); |
|||
return ( 0 ); |
|||
}</syntaxhighlight> |
|||
=={{header|Icon}} and {{header|Unicon}}== |
=={{header|Icon}} and {{header|Unicon}}== |
||
< |
<syntaxhighlight lang="icon">procedure main() |
||
write(&errout, "Goodbye World" ) |
write(&errout, "Goodbye World" ) |
||
end</ |
end</syntaxhighlight> |
||
=={{header|J}}== |
=={{header|J}}== |
||
<syntaxhighlight lang="j"> stderr |
|||
<lang j>stderr =: 1!:2&4 |
|||
1!:2&5 |
|||
stderr 'Goodbye, World!'</lang> |
|||
0 0 $ stderr 'Goodbye, World!'</syntaxhighlight> |
|||
=={{header|Java}}== |
=={{header|Java}}== |
||
< |
<syntaxhighlight lang="java">public class Err{ |
||
public static void main(String[] args){ |
public static void main(String[] args){ |
||
System.err.println("Goodbye, World!"); |
System.err.println("Goodbye, World!"); |
||
} |
} |
||
}</ |
}</syntaxhighlight> |
||
=={{header|JavaScript}}== |
=={{header|JavaScript}}== |
||
{{works with|JScript}} and only with <code>cscript.exe</code> |
{{works with|JScript}} and only with <code>cscript.exe</code> |
||
< |
<syntaxhighlight lang="javascript">WScript.StdErr.WriteLine("Goodbye, World!");</syntaxhighlight> |
||
{{works with|Node.js}} |
{{works with|Node.js}} |
||
< |
<syntaxhighlight lang="javascript">console.warn("Goodbye, World!")</syntaxhighlight> |
||
{{works with|Firefox}} |
|||
<syntaxhighlight lang="javascript">console.error("Goodbye, World!")//only works if console object exists</syntaxhighlight> |
|||
OR |
|||
<syntaxhighlight lang="javascript">throw new Error("Goodbye, World!")//Should work in any browser</syntaxhighlight> |
|||
=={{header|Joy}}== |
|||
<syntaxhighlight lang="joy">stderr "Goodbye, World!\n" fputchars pop.</syntaxhighlight> |
|||
=={{header|jq}}== |
|||
<syntaxhighlight lang="jq">jq -n —-arg s 'Goodbye, World!' '$s | stderr | empty'</syntaxhighlight> |
|||
`stderr` copies its input to STDERR before passing it along the pipeline, and hence the occurrence of `empty` above. |
|||
=={{header|Julia}}== |
|||
Julia 0.7 or newer: |
|||
<syntaxhighlight lang="julia">println(stderr, "Goodbye, World!")</syntaxhighlight> |
|||
In versions prior to Julia 0.7, the standard I/O streams were capitalized: |
|||
<syntaxhighlight lang="julia">println(STDERR, "Goodbye, World!")</syntaxhighlight> |
|||
=={{header|Kotlin}}== |
|||
<syntaxhighlight lang="scala">fun main(args: Array<String>) { |
|||
System.err.println("Goodbye, World!") |
|||
}</syntaxhighlight> |
|||
=={{header|Lang}}== |
|||
<syntaxhighlight lang="lang">fn.errorln(Goodbye, World!)</syntaxhighlight> |
|||
=={{header|langur}}== |
|||
<syntaxhighlight lang="langur">writelnErr "Goodbye, world."</syntaxhighlight> |
|||
=={{header|Lasso}}== |
|||
<syntaxhighlight lang="lasso">define stderr(s::string) => { |
|||
file_stderr->writeBytes(#s->asBytes) |
|||
} |
|||
stderr('Goodbye, World!')</syntaxhighlight> |
|||
=={{header|Lingo}}== |
|||
*Windows: |
|||
{{libheader|CommandLine Xtra}} |
|||
<syntaxhighlight lang="lingo">-- print to standard error |
|||
stdErr("Goodbye, World!", TRUE) |
|||
-- print to the Windows debug console (shown in realtime e.g. in Systernal's DebugView) |
|||
dbgPrint("Goodbye, World!")</syntaxhighlight> |
|||
*Mac OS X: |
|||
{{libheader|Shell Xtra}} |
|||
<syntaxhighlight lang="lingo">sx = xtra("Shell").new() |
|||
-- print to standard error |
|||
sx.shell_cmd("echo Goodbye, World!>&2") |
|||
-- print to system.log (shown in realtime e.g. in Konsole.app) |
|||
sx.shell_cmd("logger Goodbye, World!")</syntaxhighlight> |
|||
=={{header|Lean}}== |
|||
In lean4 |
|||
<syntaxhighlight lang="lean4"> |
|||
def main : IO Unit := do |
|||
let stderr ← IO.getStderr |
|||
stderr.putStrLn s!"Goodbye, World!" |
|||
</syntaxhighlight> |
|||
=={{header|LLVM}}== |
|||
<syntaxhighlight lang="llvm">; This is not strictly LLVM, as it uses the C library function "printf". |
|||
; LLVM does not provide a way to print values, so the alternative would be |
|||
; to just load the string into memory, and that would be boring. |
|||
; Additional comments have been inserted, as well as changes made from the output produced by clang such as putting more meaningful labels for the jumps |
|||
%struct._iobuf = type { i8* } |
|||
$"message" = comdat any |
|||
@"message" = linkonce_odr unnamed_addr constant [17 x i8] c"Goodbye, world!\0A\00", comdat, align 1 |
|||
;-- For discovering stderr (io pipe 2) |
|||
declare %struct._iobuf* @__acrt_iob_func(i32) |
|||
;--- The declaration for the external C fprintf function. |
|||
declare i32 @fprintf(%struct._iobuf*, i8*, ...) |
|||
define i32 @main() { |
|||
;-- load stderr |
|||
%1 = call %struct._iobuf* @__acrt_iob_func(i32 2) |
|||
;-- print the message to stderr with fprintf |
|||
%2 = call i32 (%struct._iobuf*, i8*, ...) @fprintf(%struct._iobuf* %1, i8* getelementptr inbounds ([17 x i8], [17 x i8]* @"message", i32 0, i32 0)) |
|||
;-- exit |
|||
ret i32 0 |
|||
}</syntaxhighlight> |
|||
{{out}} |
|||
<pre>Goodbye, world!</pre> |
|||
=={{header|Logtalk}}== |
|||
The stream alias "user_error" can be used to print to the "standard error" stream. |
|||
<syntaxhighlight lang="logtalk"> |
|||
:- object(error_message). |
|||
% the initialization/1 directive argument is automatically executed |
|||
% when the object is compiled and loaded into memory: |
|||
:- initialization(write(user_error, 'Goodbye, World!\n')). |
|||
:- end_object. |
|||
</syntaxhighlight> |
|||
=={{header|Lua}}== |
=={{header|Lua}}== |
||
< |
<syntaxhighlight lang="lua">io.stderr:write("Goodbye, World!\n")</syntaxhighlight> |
||
=={{header|m4}}== |
|||
<syntaxhighlight lang="m4">errprint(`Goodbye, World! |
|||
')dnl</syntaxhighlight> |
|||
=={{header|MANOOL}}== |
|||
<syntaxhighlight lang="manool">{{extern "manool.org.18/std/0.3/all"} in Err.WriteLine["Goodbye, World!"]}</syntaxhighlight> |
|||
=={{header| |
=={{header|Maple}}== |
||
<syntaxhighlight lang="maple"> |
|||
<lang Mathematica>Write[Streams["stderr"], "Goodbye, World!"]</lang> |
|||
error "Goodbye World" |
|||
</syntaxhighlight> |
|||
=={{header|Mathematica}} / {{header|Wolfram Language}}== |
|||
<syntaxhighlight lang="mathematica">Write[Streams["stderr"], "Goodbye, World!"]</syntaxhighlight> |
|||
=={{header|MATLAB}}== |
=={{header|MATLAB}} / {{header|Octave}}== |
||
This prints to standard error, and continues execution |
|||
<lang MATLAB>error 'Goodbye, World!'</lang> |
|||
<syntaxhighlight lang="matlab">fprintf(2,'Goodbye, World!')</syntaxhighlight> |
|||
This will not stop further execution, if called from within a script or function. |
|||
<syntaxhighlight lang="matlab">error 'Goodbye, World!'</syntaxhighlight> |
|||
=={{header|Mercury}}== |
=={{header|Mercury}}== |
||
<lang> |
<syntaxhighlight lang="text"> |
||
:- module hello_error. |
:- module hello_error. |
||
:- interface. |
:- interface. |
||
Line 319: | Line 666: | ||
io.stderr_stream(Stderr, !IO), |
io.stderr_stream(Stderr, !IO), |
||
io.write_string(Stderr, "Goodbye, World!\n", !IO). |
io.write_string(Stderr, "Goodbye, World!\n", !IO). |
||
</syntaxhighlight> |
|||
</lang> |
|||
=={{header|Metafont}}== |
=={{header|Metafont}}== |
||
Metafont has no a real way to send a text to the standard output/error nor to a file. Anyway it exists the <code>errmessage</code> command which will output an error message and prompt the user for action (suspending the interpretation of the source). |
Metafont has no a real way to send a text to the standard output/error nor to a file. Anyway it exists the <code>errmessage</code> command which will output an error message and prompt the user for action (suspending the interpretation of the source). |
||
< |
<syntaxhighlight lang="metafont">errmessage "Error"; |
||
message "...going on..."; % if the user decides to go on and not to stop |
message "...going on..."; % if the user decides to go on and not to stop |
||
% the program because of the error.</ |
% the program because of the error.</syntaxhighlight> |
||
=={{header|min}}== |
|||
{{works with|min|0.37.0}} |
|||
Currently, ''min'' has three possibilities for outputting to stderr: |
|||
<syntaxhighlight lang="min">"Goodbye, World!" warn! |
|||
"Goodbye, World!" error! |
|||
"Goodbye, World!" fatal!</syntaxhighlight> |
|||
The first two depend on the current log level (and are enabled by default). The last one additionally terminates the program. |
|||
=={{header|ML/I}}== |
=={{header|ML/I}}== |
||
< |
<syntaxhighlight lang="ml/i">MCSET S4=1 |
||
MCNOTE Goodbye, World!</ |
MCNOTE Goodbye, World!</syntaxhighlight> |
||
=={{header|Miranda}}== |
|||
<syntaxhighlight lang="miranda">main :: [sys_message] |
|||
main = [Stderr "Hello, world!\n"]</syntaxhighlight> |
|||
=={{header|Modula-2}}== |
=={{header|Modula-2}}== |
||
< |
<syntaxhighlight lang="modula2">MODULE HelloErr; |
||
IMPORT StdError; |
IMPORT StdError; |
||
Line 339: | Line 698: | ||
StdError.WriteString('Goodbye, World!'); |
StdError.WriteString('Goodbye, World!'); |
||
StdError.WriteLn |
StdError.WriteLn |
||
END HelloErr.</ |
END HelloErr.</syntaxhighlight> |
||
=={{header|Modula-3}}== |
=={{header|Modula-3}}== |
||
< |
<syntaxhighlight lang="modula3">MODULE Stderr EXPORTS Main; |
||
IMPORT Wr, Stdio; |
IMPORT Wr, Stdio; |
||
Line 348: | Line 707: | ||
BEGIN |
BEGIN |
||
Wr.PutText(Stdio.stderr, "Goodbye, World!\n"); |
Wr.PutText(Stdio.stderr, "Goodbye, World!\n"); |
||
END Stderr.</ |
END Stderr.</syntaxhighlight> |
||
=={{header|N/t/roff}}== |
|||
The request <code>.tm</code> prints whatever after it, until and including the newline character, to the standard error. The string parsed to it need not be quoted and will never appear on standard output. |
|||
<syntaxhighlight lang="n/t/roff"> |
|||
.tm Goodbye, World! |
|||
</syntaxhighlight> |
|||
=={{header|Neko}}== |
|||
<syntaxhighlight lang="actionscript">/** |
|||
Hello world, to standard error, in Neko |
|||
Tectonics: |
|||
nekoc hello-stderr.neko |
|||
neko hello-stderr |
|||
*/ |
|||
/* Assume stderr is already open, just need write */ |
|||
var file_write = $loader.loadprim("std@file_write", 4); |
|||
/* Load (and execute) the file_stderr primitive */ |
|||
var stderr = $loader.loadprim("std@file_stderr", 0)(); |
|||
file_write(stderr, "Goodbye, World!\n", 0, 16);</syntaxhighlight> |
|||
{{out}} |
|||
<pre>prompt$ nekoc hello-stderr.neko |
|||
prompt$ neko hello-stderr |
|||
Goodbye, World! |
|||
prompt$ neko hello-stderr 2>/dev/null |
|||
prompt$</pre> |
|||
=={{header|Nemerle}}== |
|||
<syntaxhighlight lang="nemerle">System.Console.Error.WriteLine("Goodbye, World!");</syntaxhighlight> |
|||
=={{header|NetRexx}}== |
=={{header|NetRexx}}== |
||
< |
<syntaxhighlight lang="netrexx">/* NetRexx */ |
||
options replace format comments java crossref savelog symbols binary |
options replace format comments java crossref savelog symbols binary |
||
System.err.println("Goodbye, World!") |
System.err.println("Goodbye, World!") |
||
</syntaxhighlight> |
|||
</lang> |
|||
=={{header|Nim}}== |
|||
<syntaxhighlight lang="nim">stderr.writeLine "Hello World"</syntaxhighlight> |
|||
=={{header|Nu}}== |
|||
<syntaxhighlight lang="nu"> |
|||
print -e "Goodbye, World!" |
|||
</syntaxhighlight> |
|||
=={{header|Oberon-2}}== |
|||
Oxford Oberon-2 |
|||
<syntaxhighlight lang="oberon2"> |
|||
MODULE HelloErr; |
|||
IMPORT Err; |
|||
BEGIN |
|||
Err.String("Goodbye, World!");Err.Ln |
|||
END HelloErr. |
|||
</syntaxhighlight> |
|||
{{out}} |
|||
<pre> |
|||
Goodbye, World! |
|||
</pre> |
|||
=={{header|Objective-C}}== |
=={{header|Objective-C}}== |
||
Line 363: | Line 778: | ||
{{Works with|Cocoa}} |
{{Works with|Cocoa}} |
||
In Objective-C one can use the standard C library and the stderr as in the C language; nonetheless a common way to output to stderr for logging purpose and/or error notification is the <tt>NSLog</tt> function, that works almost like <tt>fprintf(stderr, "...")</tt>, save for the fact that the format string |
In Objective-C one can use the standard C library and the stderr as in the C language; nonetheless a common way to output to stderr for logging purpose and/or error notification is the <tt>NSLog</tt> function, that works almost like <tt>fprintf(stderr, "...")</tt>, save for the fact that the format string |
||
is an NSString object, and it also prepends a timestamp. |
|||
< |
<syntaxhighlight lang="objc">#import <Foundation/Foundation.h> |
||
int main() |
int main() |
||
Line 373: | Line 789: | ||
NSLog(@"Goodbye, World!"); |
NSLog(@"Goodbye, World!"); |
||
return 0; |
return 0; |
||
}</ |
}</syntaxhighlight> |
||
=={{header|OCaml}}== |
=={{header|OCaml}}== |
||
< |
<syntaxhighlight lang="ocaml">prerr_endline "Goodbye, World!"; (* this is how you print a string with newline to stderr *) |
||
Printf.eprintf "Goodbye, World!\n"; (* this is how you would use printf with stderr *)</ |
Printf.eprintf "Goodbye, World!\n"; (* this is how you would use printf with stderr *)</syntaxhighlight> |
||
we can also use the ''out_channel'' '''stderr''': |
we can also use the ''out_channel'' '''stderr''': |
||
< |
<syntaxhighlight lang="ocaml">output_string stderr "Goodbye, World!\n"; |
||
Printf.fprintf stderr "Goodbye, World!\n";</ |
Printf.fprintf stderr "Goodbye, World!\n";</syntaxhighlight> |
||
finally the [http://caml.inria.fr/pub/docs/manual-ocaml/libref/Unix.html Unix] module also provides unbuffered write functions: |
finally the [http://caml.inria.fr/pub/docs/manual-ocaml/libref/Unix.html Unix] module also provides unbuffered write functions: |
||
< |
<syntaxhighlight lang="ocaml">let msg = "Goodbye, World!\n" in |
||
ignore(Unix.write Unix.stderr msg 0 (String.length msg)) ;;</ |
ignore(Unix.write Unix.stderr msg 0 (String.length msg)) ;;</syntaxhighlight> |
||
=={{header|Octave}}== |
=={{header|Octave}}== |
||
< |
<syntaxhighlight lang="octave">fprintf(stderr, "Goodbye, World!\n");</syntaxhighlight> |
||
=={{header|Oforth}}== |
|||
<syntaxhighlight lang="oforth">System.Err "Goodbye, World!" << cr</syntaxhighlight> |
|||
=={{header|Ol}}== |
|||
<syntaxhighlight lang="scheme"> |
|||
(print-to stderr "Goodbye, World!") |
|||
</syntaxhighlight> |
|||
=={{header|ooRexx}}== |
|||
ooRexx provides a .error object that writes output to the standard error stream. |
|||
<syntaxhighlight lang="oorexx">.error~lineout("Goodbye, World!")</syntaxhighlight> |
|||
The .error object is a proxy that delegates to a backing stream, so this might be redirected. |
|||
By default, this delegates to the .stderr object, which can also be used directly. |
|||
<syntaxhighlight lang="oorexx">.stderr~lineout("Goodbye, World!")</syntaxhighlight> |
|||
or in 'Classic REXX style' |
|||
<syntaxhighlight lang="oorexx">/* REXX --------------------------------------------------------------- |
|||
* 07.07.2014 Walter Pachl |
|||
* 12.07.2014 WP see Discussion where redirection from within the program is shown |
|||
*--------------------------------------------------------------------*/ |
|||
Say 'rexx serr 2>err.txt directs the stderr output to the file err.txt' |
|||
Call lineout 'stderr','Good bye, world!' |
|||
Call lineout ,'Hello, world!' |
|||
Say 'and this is the error output:' |
|||
'type err.txt' </syntaxhighlight> |
|||
=={{header|Oz}}== |
=={{header|Oz}}== |
||
< |
<syntaxhighlight lang="oz">functor |
||
import Application System |
import Application System |
||
define |
define |
||
{System.showError "Goodbye, World!"} |
{System.showError "Goodbye, World!"} |
||
{Application.exit 0} |
{Application.exit 0} |
||
end</ |
end</syntaxhighlight> |
||
=={{header|PARI/GP}}== |
=={{header|PARI/GP}}== |
||
< |
<syntaxhighlight lang="parigp">error("Goodbye, World!")</syntaxhighlight> |
||
=={{header|Pascal}}== |
=={{header|Pascal}}== |
||
{{Works with|Free Pascal}} |
{{Works with|Free Pascal}} |
||
< |
<syntaxhighlight lang="pascal">program byeworld; |
||
begin |
begin |
||
writeln(StdErr, 'Goodbye, World!'); |
writeln(StdErr, 'Goodbye, World!'); |
||
end.</ |
end.</syntaxhighlight> |
||
=={{header|Perl}}== |
=={{header|Perl}}== |
||
< |
<syntaxhighlight lang="perl">warn "Goodbye, World!\n";</syntaxhighlight> |
||
Or: |
Or: |
||
< |
<syntaxhighlight lang="perl">print STDERR "Goodbye, World!\n";</syntaxhighlight> |
||
=={{header| |
=={{header|Phix}}== |
||
<!--<syntaxhighlight lang="phix">--> |
|||
<lang perl6>note "Goodbye, World!";</lang> |
|||
<span style="color: #7060A8;">puts</span><span style="color: #0000FF;">(</span><span style="color: #000000;">2</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"Goodbye, World!"</span><span style="color: #0000FF;">)</span> |
|||
<!--</syntaxhighlight>--> |
|||
=={{header|PHP}}== |
=={{header|PHP}}== |
||
< |
<syntaxhighlight lang="php">fprintf(STDERR, "Goodbye, World!\n");</syntaxhighlight> |
||
or |
or |
||
< |
<syntaxhighlight lang="php">file_put_contents("php://stderr","Hello World!\n");</syntaxhighlight> |
||
=={{header|Picat}}== |
|||
<syntaxhighlight lang="picat">println(stderr,"Goodbye, World!")</syntaxhighlight> |
|||
=={{header|PicoLisp}}== |
=={{header|PicoLisp}}== |
||
< |
<syntaxhighlight lang="picolisp">(out 2 (prinl "Goodbye, World!"))</syntaxhighlight> |
||
=={{header|Pike}}== |
|||
<syntaxhighlight lang="pike">werror("Goodbye, World!");</syntaxhighlight> |
|||
=={{header|PL/I}}== |
=={{header|PL/I}}== |
||
< |
<syntaxhighlight lang="pl/i">display ('Goodbye, World');</syntaxhighlight> |
||
=={{header|PostScript}}== |
=={{header|PostScript}}== |
||
< |
<syntaxhighlight lang="postscript">(%stderr) (w) file dup |
||
(Goodbye, World! |
(Goodbye, World! |
||
) writestring |
) writestring |
||
closefile</ |
closefile</syntaxhighlight> |
||
=={{header|PowerBASIC}}== |
=={{header|PowerBASIC}}== |
||
{{works with|PowerBASIC Console Compiler}} |
{{works with|PowerBASIC Console Compiler}} |
||
< |
<syntaxhighlight lang="powerbasic">STDERR "Goodbye, World!"</syntaxhighlight> |
||
=={{header|PowerShell}}== |
=={{header|PowerShell}}== |
||
Since PowerShell has a slightly different system of pipes and streams |
Since PowerShell has a slightly different system of pipes and streams |
||
(to facilitate easy usage from a host application) the |
|||
<lang powershell>Write-Error "Goodbye, World!"</lang> |
|||
standard Write-Error cmdlet is mainly for sending annotated error messages |
|||
Note that this outputs more than just the message because behind the scenes it is an uncaught exception: |
|||
to the host: |
|||
<syntaxhighlight lang="powershell">Write-Error "Goodbye, World!"</syntaxhighlight> |
|||
Note that this outputs more than just the message, |
|||
because behind the scenes it is an uncaught exception: |
|||
<pre>Write-Error "Goodbye, World!" : Goodbye, World! |
<pre>Write-Error "Goodbye, World!" : Goodbye, World! |
||
+ CategoryInfo : NotSpecified: (:) [Write-Error], WriteErrorException |
+ CategoryInfo : NotSpecified: (:) [Write-Error], WriteErrorException |
||
+ FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorException</pre> |
+ FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorException</pre> |
||
To accurately reproduce the behavior of other languages one has to resort to .NET in this case: |
To accurately reproduce the behavior of other languages one has to resort to .NET in this case: |
||
< |
<syntaxhighlight lang="powershell">[Console]::Error.WriteLine("Goodbye, World!")</syntaxhighlight> |
||
=={{header|PureBasic}}== |
=={{header|PureBasic}}== |
||
Line 459: | Line 912: | ||
Standard error output can be used in conjunction with [http://www.purebasic.com/documentation/process/readprogramerror.html ReadProgramError()] to reads a line from an other programs error output (stderr). |
Standard error output can be used in conjunction with [http://www.purebasic.com/documentation/process/readprogramerror.html ReadProgramError()] to reads a line from an other programs error output (stderr). |
||
< |
<syntaxhighlight lang="purebasic">ConsoleError("Goodbye, World!")</syntaxhighlight> |
||
=={{header|Python}}== |
=={{header|Python}}== |
||
{{works with|Python|2.x}} |
{{works with|Python|2.x}} |
||
< |
<syntaxhighlight lang="python">import sys |
||
print >> sys.stderr, "Goodbye, World!"</ |
print >> sys.stderr, "Goodbye, World!"</syntaxhighlight> |
||
{{works with|Python|3.x}} |
{{works with|Python|3.x}} |
||
< |
<syntaxhighlight lang="python">import sys |
||
print("Goodbye, World!", file=sys.stderr)</ |
print("Goodbye, World!", file=sys.stderr)</syntaxhighlight> |
||
Works with either: |
Works with either: |
||
< |
<syntaxhighlight lang="python">import sys |
||
sys.stderr.write("Goodbye, World!\n")</ |
sys.stderr.write("Goodbye, World!\n")</syntaxhighlight> |
||
=={{header|R}}== |
=={{header|R}}== |
||
< |
<syntaxhighlight lang="r">cat("Goodbye, World!", file=stderr())</syntaxhighlight> |
||
=={{header|Ra}}== |
|||
<syntaxhighlight lang="ra"> |
|||
class HelloWorld |
|||
**Prints "Goodbye, World!" to standard error** |
|||
on start |
|||
print to Console.error made !, "Goodbye, World!" |
|||
</syntaxhighlight> |
|||
=={{header|Racket}}== |
|||
<syntaxhighlight lang="racket"> |
|||
(eprintf "Goodbye, World!\n") |
|||
</syntaxhighlight> |
|||
=={{header|Raku}}== |
|||
(formerly Perl 6) |
|||
<syntaxhighlight lang="raku" line>note "Goodbye, World!";</syntaxhighlight> |
|||
=={{header|Retro}}== |
=={{header|Retro}}== |
||
<syntaxhighlight lang="retro">'Goodbye,_World! '/dev/stderr file:spew</syntaxhighlight> |
|||
<lang Retro>with files' |
|||
"Goodbye, World!" tempString dup getLength "/dev/stderr" spew</lang> |
|||
=={{header|REXX}}== |
=={{header|REXX}}== |
||
===version 1=== |
|||
Version 1. |
|||
This version will work with those operating systems (hosts) |
|||
<lang rexx> |
|||
that support stream output and a STDERR output |
|||
say 'Goodbye, World!' |
|||
<br>stream (by name). |
|||
</lang> |
|||
<br>If the '''stderr''' name is supported and enabled, the output is written to the terminal. |
|||
Version 2. |
|||
<br>If not supported or disabled, the output is written to a (disk) file named '''STDERR'''. |
|||
<lang rexx> |
|||
<syntaxhighlight lang="rexx">call lineout 'STDERR', "Goodbye, World!"</syntaxhighlight> |
|||
</lang> |
|||
===version 2=== |
|||
Version 3. |
|||
Same as above, but uses a different style and also invokes '''charout''' instead of '''lineout'''. |
|||
<lang rexx> |
|||
<syntaxhighlight lang="rexx">msgText = 'Goodbye, World!' |
|||
call charout 'STDERR', msgText</syntaxhighlight> |
|||
</lang> |
|||
Version 4. |
|||
===version 3=== |
|||
<lang rexx> |
|||
This works on Windows 7 and ooRexx and REGINA |
|||
call charout ,"Goodbye, World!" |
|||
<syntaxhighlight lang="rexx">/* REXX --------------------------------------------------------------- |
|||
</lang> |
|||
* 07.07.2014 Walter Pachl |
|||
* enter the appropriate command shown in a command prompt. |
|||
* "rexx serr.rex 2>err.txt" |
|||
* or "regina serr.rex 2>err.txt" |
|||
* 2>file will redirect the stderr stream to the specified file. |
|||
* I don't know any other way to catch this stream |
|||
*--------------------------------------------------------------------*/ |
|||
Parse Version v |
|||
Say v |
|||
Call lineout 'stderr','Good bye, world!' |
|||
Call lineout ,'Hello, world!' |
|||
Say 'and this is the error output:' |
|||
'type err.txt'</syntaxhighlight> |
|||
===version 4=== |
|||
ARexx with tracing console |
|||
<syntaxhighlight lang="rexx">/**/ |
|||
Address command tco |
|||
Call writeln stderr,'Good bye, world!' |
|||
Call writeln stdout,'Hello, world!'</syntaxhighlight> |
|||
=={{header|Ring}}== |
|||
<syntaxhighlight lang="ring">fputs(stderr,"Goodbye, World!")</syntaxhighlight> |
|||
=={{header|RPL}}== |
|||
There is no error console in RPL but all error messages are displayed at the top two lines of the display, which freezes until a key is pressed. |
|||
This can be mimicked with the <code>DISP</code> instruction: |
|||
≪ "Hello world!" 1 DISP ≫ |
|||
=={{header|Ruby}}== |
=={{header|Ruby}}== |
||
< |
<syntaxhighlight lang="ruby">STDERR.puts "Goodbye, World!"</syntaxhighlight> |
||
The following also works, unless you have disabled warnings (ruby command line option "-W0" or set <code>$VERBOSE=nil</code>) |
The following also works, unless you have disabled warnings (ruby command line option "-W0" or set <code>$VERBOSE=nil</code>) |
||
< |
<syntaxhighlight lang="ruby">warn "Goodbye, World!"</syntaxhighlight> |
||
=={{header|Run BASIC}}== |
=={{header|Run BASIC}}== |
||
< |
<syntaxhighlight lang="runbasic">html "<script> |
||
window.open('','error_msg',''); |
window.open('','error_msg',''); |
||
document.write('Goodbye, World!'); |
document.write('Goodbye, World!'); |
||
</script>""</ |
</script>""</syntaxhighlight> |
||
Run Basic runs in a browser. |
Run Basic runs in a browser. |
||
This opens a new browser window, |
|||
or a tab in the case of Chrome and some others. |
|||
=={{header|Rust}}== |
|||
<syntaxhighlight lang="rust">fn main() { |
|||
eprintln!("Hello, {}!", "world"); |
|||
}</syntaxhighlight> |
|||
or |
|||
<syntaxhighlight lang="rust">fn main() { |
|||
use ::std::io::Write; |
|||
let (stderr, errmsg) = (&mut ::std::io::stderr(), "Error writing to stderr"); |
|||
writeln!(stderr, "Bye, world!").expect(errmsg); |
|||
let (goodbye, world) = ("Goodbye", "world"); |
|||
writeln!(stderr, "{}, {}!", goodbye, world).expect(errmsg); |
|||
}</syntaxhighlight> |
|||
or |
|||
<syntaxhighlight lang="rust">fn main() { |
|||
use std::io::{self, Write}; |
|||
io::stderr().write(b"Goodbye, world!").expect("Could not write to stderr"); |
|||
// With some finagling, you can do a formatted string here as well |
|||
let goodbye = "Goodbye"; |
|||
let world = "world"; |
|||
io::stderr().write(&*format!("{}, {}!", goodbye, world).as_bytes()).expect("Could not write to stderr"); |
|||
// Clearly, if you want formatted strings there's no reason not to just use writeln! |
|||
}</syntaxhighlight> |
|||
=={{header|S-lang}}== |
|||
<syntaxhighlight lang="s-lang">() = fputs("Goodbye, World!\n", stderr);</syntaxhighlight> |
|||
=={{header|Salmon}}== |
=={{header|Salmon}}== |
||
<syntaxhighlight lang="salmon"> |
|||
<lang Salmon> |
|||
standard_error.print("Goodbye, World!\n"); |
standard_error.print("Goodbye, World!\n"); |
||
</syntaxhighlight> |
|||
</lang> |
|||
or |
or |
||
<syntaxhighlight lang="salmon"> |
|||
<lang Salmon> |
|||
include "short.salm"; |
include "short.salm"; |
||
stderr.print("Goodbye, World!\n"); |
stderr.print("Goodbye, World!\n"); |
||
</syntaxhighlight> |
|||
</lang> |
|||
or |
or |
||
<syntaxhighlight lang="salmon"> |
|||
<lang Salmon> |
|||
include "shorter.salm"; |
include "shorter.salm"; |
||
err.print("Goodbye, World!\n"); |
err.print("Goodbye, World!\n"); |
||
</syntaxhighlight> |
|||
</lang> |
|||
or |
or |
||
<syntaxhighlight lang="salmon"> |
|||
<lang Salmon> |
|||
include "shorter.salm"; |
include "shorter.salm"; |
||
se.print("Goodbye, World!\n"); |
se.print("Goodbye, World!\n"); |
||
</syntaxhighlight> |
|||
</lang> |
|||
=={{header|Sather}}== |
=={{header|Sather}}== |
||
< |
<syntaxhighlight lang="sather">class MAIN is |
||
main is |
main is |
||
#ERR + "Hello World!\n"; |
#ERR + "Hello World!\n"; |
||
end; |
end; |
||
end;</ |
end;</syntaxhighlight> |
||
=={{header|Scala}}== |
=={{header|Scala}}== |
||
{{libheader|Console}} |
|||
<lang scala>System.err.println("Goodbye, World!")</lang> |
|||
<lang scala>Console.err.println("Goodbye, World!")</lang> |
|||
===Ad hoc REPL solution=== |
|||
Ad hoc solution as [http://en.wikipedia.org/wiki/Read%E2%80%93eval%E2%80%93print_loop REPL] script: |
|||
<syntaxhighlight lang="scala">Console.err.println("Goodbye, World!")</syntaxhighlight> |
|||
===Via Java runtime=== |
|||
This is a call to the Java run-time library. '''Not recommendated'''. |
|||
<syntaxhighlight lang="scala">System.err.println("Goodbye, World!")</syntaxhighlight> |
|||
===Via Scala Console API=== |
|||
This is a call to the Scala API. '''Recommendated'''. |
|||
<syntaxhighlight lang="scala">Console.err.println("Goodbye, World!")</syntaxhighlight> |
|||
===Short term deviation to err=== |
|||
<syntaxhighlight lang="scala">Console.withOut(Console.err) { println("This goes to default _err_") }</syntaxhighlight> |
|||
===Long term deviation to err=== |
|||
<syntaxhighlight lang="scala"> println ("Out not deviated") |
|||
Console.setOut(Console.err) |
|||
println ("Out deviated") |
|||
Console.setOut(Console.out) // Reset to normal</syntaxhighlight> |
|||
=={{header|Scheme}}== |
=={{header|Scheme}}== |
||
< |
<syntaxhighlight lang="scheme">(error "Goodbye, World!")</syntaxhighlight> |
||
=={{header|Scilab}}== |
|||
<syntaxhighlight lang="scilab">error("Goodbye, World!")</syntaxhighlight> |
|||
=={{header|sed}}== |
=={{header|sed}}== |
||
Requires <tt>/dev/stderr</tt> |
Requires <tt>/dev/stderr</tt> |
||
< |
<syntaxhighlight lang="sed">#n |
||
1 { |
1 { |
||
s/.*/Goodbye, World!/w /dev/stderr |
s/.*/Goodbye, World!/w /dev/stderr |
||
}</ |
}</syntaxhighlight> |
||
This program requires at least 1 line of input. |
This program requires at least 1 line of input. |
||
It changes the first line to "Goodbye, World!" |
|||
and then prints the first line to standard error. |
|||
It reads and ignores the remaining lines. |
|||
{{out|Test output}} |
|||
Test output: <lang bash>$ echo a | sed -f error.sed >/dev/null |
|||
<syntaxhighlight lang="bash">$ echo a | sed -f error.sed >/dev/null |
|||
Goodbye, World!</lang> |
|||
Goodbye, World!</syntaxhighlight> |
|||
=={{header|Seed7}}== |
=={{header|Seed7}}== |
||
< |
<syntaxhighlight lang="seed7">$ include "seed7_05.s7i"; |
||
const proc: main is func |
const proc: main is func |
||
begin |
begin |
||
writeln(STD_ERR, "Goodbye, World!"); |
writeln(STD_ERR, "Goodbye, World!"); |
||
end func;</ |
end func;</syntaxhighlight> |
||
=={{header|Sidef}}== |
|||
<syntaxhighlight lang="ruby">STDERR.println("Goodbye, World!");</syntaxhighlight> |
|||
=={{header|Slate}}== |
=={{header|Slate}}== |
||
< |
<syntaxhighlight lang="slate">inform: 'Goodbye, World!' &target: DebugConsole.</syntaxhighlight> |
||
=={{header|Slope}}== |
|||
<syntaxhighlight lang="slope">(write "Goodbye, world!" stderr)</syntaxhighlight> |
|||
=={{header|Smalltalk}}== |
|||
The details on to which name stderr is bound may vary between Smalltalk dialects. If different, a "Smalltalk at:#Stderr put:<name your stream here>" should provide compatibility. |
|||
<syntaxhighlight lang="smalltalk">Stderr nextPutAll: 'Goodbye, World!'</syntaxhighlight> |
|||
However, all Smalltalks provide a console named "Transcript", where diagnostics is usually sent to (which is convenient, if there is no stderr to look at, as when started in Windows as an exe, vs. a com).<br>Thus: |
|||
<syntaxhighlight lang="smalltalk">Transcript show: 'Goodbye, World!'</syntaxhighlight> |
|||
will work on all, and is the preferred way to do this. |
|||
<br>(and yes, when running UI-less as a console program, the global "Transcript" is usually bound to the stderr stream). |
|||
The above tells the stream to write a string; |
|||
you can also tell the string to print itself onto some stream: |
|||
<syntaxhighlight lang="smalltalk">'Goodbye, World!' printOn: Stderr</syntaxhighlight> |
|||
Both have the same effect. |
|||
=={{header|SNOBOL4}}== |
=={{header|SNOBOL4}}== |
||
< |
<syntaxhighlight lang="snobol4"> terminal = "Error" |
||
output = "Normal text" |
output = "Normal text" |
||
end</ |
end</syntaxhighlight> |
||
=={{header|Standard ML}}== |
=={{header|Standard ML}}== |
||
< |
<syntaxhighlight lang="sml">TextIO.output (TextIO.stdErr, "Goodbye, World!\n")</syntaxhighlight> |
||
=={{header|Swift}}== |
|||
<syntaxhighlight lang="swift">import Foundation |
|||
let out = NSOutputStream(toFileAtPath: "/dev/stderr", append: true) |
|||
let err = "Goodbye, World!".dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false) |
|||
out?.open() |
|||
let success = out?.write(UnsafePointer<UInt8>(err!.bytes), maxLength: err!.length) |
|||
out?.close() |
|||
if let bytes = success { |
|||
println("\nWrote \(bytes) bytes") |
|||
}</syntaxhighlight> |
|||
{{out}} |
|||
<pre> |
|||
Goodbye, World! |
|||
Wrote 15 bytes |
|||
</pre> |
|||
=={{header|Tcl}}== |
=={{header|Tcl}}== |
||
< |
<syntaxhighlight lang="tcl">puts stderr "Goodbye, World!"</syntaxhighlight> |
||
=={{header|Transact-SQL}}== |
|||
<syntaxhighlight lang="transact-sql"> RAISERROR 'Goodbye, World!', 16, 1 </syntaxhighlight> |
|||
=={{header|True BASIC}}== |
|||
<syntaxhighlight lang="basic"> |
|||
CAUSE error 1, "Goodbye World!" |
|||
END |
|||
</syntaxhighlight> |
|||
=={{header|TUSCRIPT}}== |
=={{header|TUSCRIPT}}== |
||
< |
<syntaxhighlight lang="tuscript"> |
||
$$ MODE TUSCRIPT |
$$ MODE TUSCRIPT |
||
PRINT/ERROR "hello world" |
PRINT/ERROR "hello world" |
||
text="goodbye world" |
text="goodbye world" |
||
PRINT/ERROR text |
PRINT/ERROR text |
||
</syntaxhighlight> |
|||
</lang> |
|||
{{out}} |
|||
Output: |
|||
<pre> |
<pre> |
||
@@@@@@@@ hello world @@@@@@@@ |
@@@@@@@@ hello world @@@@@@@@ |
||
Line 604: | Line 1,208: | ||
=={{header|UNIX Shell}}== |
=={{header|UNIX Shell}}== |
||
{{works with|Bourne Shell}} |
{{works with|Bourne Shell}} |
||
< |
<syntaxhighlight lang="bash">echo "Goodbye, World!" >&2</syntaxhighlight> |
||
==={{header|C Shell}}=== |
==={{header|C Shell}}=== |
||
< |
<syntaxhighlight lang="csh">echo "Goodbye, World!" >/dev/stderr</syntaxhighlight> |
||
This requires <code>/dev/stderr</code>, a device node from [[BSD]] |
This requires <code>/dev/stderr</code>, a device node from [[BSD]] |
||
and some other Unix clones. |
|||
This command works with both Bourne Shell and C Shell. |
|||
=={{header|Ursa}}== |
|||
<syntaxhighlight lang="ursa">out "goodbye, world!" endl console.err</syntaxhighlight> |
|||
=={{header|VBA}}== |
|||
<syntaxhighlight lang="vb"> |
|||
Sub StandardError() |
|||
Debug.Print "Goodbye World!" |
|||
End Sub |
|||
</syntaxhighlight> |
|||
=={{header|VBScript}}== |
|||
Must work in cscript.exe |
|||
<syntaxhighlight lang="vb">WScript.StdErr.WriteLine "Goodbye, World!"</syntaxhighlight> |
|||
=={{header|Verbexx}}== |
|||
<syntaxhighlight lang="verbexx">@STDERR "Goodbye, World!\n";</syntaxhighlight> |
|||
=={{header|Visual Basic .NET}}== |
|||
<syntaxhighlight lang="vbnet">Module Module1 |
|||
Sub Main() |
|||
Console.Error.WriteLine("Goodbye, World!") |
|||
End Sub |
|||
End Module</syntaxhighlight> |
|||
=={{header|WDTE}}== |
|||
<syntaxhighlight lang="wdte">io.writeln io.stderr 'Goodbye, World!';</syntaxhighlight> |
|||
=={{header|Wren}}== |
|||
<syntaxhighlight lang="wren">Fiber.abort("Goodbye, World!")</syntaxhighlight> |
|||
=={{header|X86 Assembly}}== |
=={{header|X86 Assembly}}== |
||
Line 619: | Line 1,257: | ||
Prints "Goodbye, World!" to stderr (and there is probably an even simpler version): |
Prints "Goodbye, World!" to stderr (and there is probably an even simpler version): |
||
< |
<syntaxhighlight lang="asm">section .data |
||
msg db 'Goodbye, World!', 0AH |
msg db 'Goodbye, World!', 0AH |
||
len equ $-msg |
len equ $-msg |
||
Line 633: | Line 1,271: | ||
mov ebx, 1 |
mov ebx, 1 |
||
mov eax, 1 |
mov eax, 1 |
||
int 80h</ |
int 80h</syntaxhighlight> |
||
=={{header|XLISP}}== |
|||
{{omit from|Applesoft BASIC}} |
|||
<syntaxhighlight lang="xlisp">(DISPLAY "Goodbye, World!" *ERROR-OUTPUT*)</syntaxhighlight> |
|||
{{omit from|bc|Always prints to standard output.}} |
|||
{{omit from|Brainf***}} |
|||
{{omit from|dc|Always prints to standard output.}} |
|||
{{omit from|GUISS|Cannot customize error messages}} |
|||
{{omit from|Integer BASIC}} |
|||
{{omit from|TI-83 BASIC|Same reason as TI-89.}} |
|||
{{omit from|TI-89 BASIC|no analogue to stderr, unless you count graph display vs. program IO}} |
|||
{{omit from|Unlambda|No concept of standard error (or alternate output streams in general).}} |
|||
=={{header|XPL0}}== |
|||
[[Category:Streams]] |
|||
The terms "standard output" and "standard error" are not used, |
|||
but it's trivial to send messages to a variety of devices |
|||
by specifying their numbers. |
|||
Normally messages are displayed on the text console, which is device 0. |
|||
Instead, this example sends the message to the (first) printer, |
|||
which is device 2. |
|||
<syntaxhighlight lang="xpl0">code Text=12; |
|||
Text(2, "Goodbye, World!")</syntaxhighlight> |
|||
=={{header|Yabasic}}== |
|||
<syntaxhighlight lang="yabasic"> |
|||
error "Goodbye World!" |
|||
</syntaxhighlight> |
|||
=={{header|Zig}}== |
|||
'''Works with:''' 0.10.x, 0.11.x, 0.12.0-dev.1357+10d03acdb |
|||
Variant with error handling: |
|||
<syntaxhighlight lang="zig">const std = @import("std"); |
|||
pub fn main() std.fs.File.WriteError!void { |
|||
const stderr = std.io.getStdErr(); |
|||
try stderr.writeAll("Goodbye, World!\n"); |
|||
}</syntaxhighlight> |
|||
'''Works with:''' 0.10.x, 0.11.x, 0.12.0-dev.1357+10d03acdb |
|||
Variant with no error handling (useful when debugging): |
|||
<syntaxhighlight lang="zig">const std = @import("std"); |
|||
pub fn main() void { |
|||
// Silently returns if writing to stderr fails. |
|||
std.debug.print("Goodbye, World!\n", .{}); |
|||
}</syntaxhighlight> |
|||
=={{header|zkl}}== |
|||
<syntaxhighlight lang="zkl">File.stderr.writeln("Goodbye, World!")</syntaxhighlight> |
Latest revision as of 22:21, 4 March 2024
You are encouraged to solve this task according to the task description, using any language you may know.
A common practice in computing is to send error messages to a different output stream than normal text console messages.
The normal messages print to what is called "standard output" or "standard out".
The error messages print to "standard error".
This separation can be used to redirect error messages to a different place than normal messages.
- Task
Show how to print a message to standard error by printing Goodbye, World! on that stream.
11l
:stderr.write("Goodbye, World!\n")
4DOS Batch
echoerr Goodbye, World!
AArch64 Assembly
.equ STDERR, 2
.equ SVC_WRITE, 64
.equ SVC_EXIT, 93
.text
.global _start
_start:
stp x29, x30, [sp, -16]!
mov x0, #STDERR
ldr x1, =msg
mov x2, 15
mov x8, #SVC_WRITE
mov x29, sp
svc #0 // write(stderr, msg, 15);
ldp x29, x30, [sp], 16
mov x0, #0
mov x8, #SVC_EXIT
svc #0 // exit(0);
msg: .ascii "Goodbye World!\n"
Ada
with Ada.Text_IO; use Ada.Text_IO;
procedure Goodbye_World is
begin
Put_Line (Standard_Error, "Goodbye, World!");
end Goodbye_World;
Agena
io.write( io.stderr, "Goodbye, World!\n" )
Aime
v_text("Goodbye, World!\n");
ALGOL 68
The procedures print and printf output to stand out, whereas put and putf can output to any open file, including stand error.
main:(
put(stand error, ("Goodbye, World!", new line))
)
- Output:
Goodbye, World!
Argile
use std
eprint "Goodbye, World!"
or
use std
eprintf "Goodbye, World!\n"
or
use std
fprintf stderr "Goodbye, World!\n"
ARM Assembly
/* ARM assembly Raspberry PI */
/* program hellowordLP.s */
.data
szMessage: .asciz "Goodbye world. \n " @ error message
.equ LGMESSAGE, . - szMessage @ compute length of message
.text
.global main
main:
mov r0, #2 @ output error linux
ldr r1, iAdrMessage @ adresse of message
mov r2, #LGMESSAGE @ sizeof(message)
mov r7, #4 @ select system call 'write'
swi #0 @ perform the system call
mov r0, #0 @ return code
mov r7, #1 @ request to exit program
swi #0 @ perform the system call
iAdrMessage: .int szMessage
Arturo
panic "Goodbye, World!"
ATS
implement main0 () = fprint (stderr_ref, "Goodbye, World!\n")
AutoHotkey
requires AutoHotkey_N implementation.
; c:\> autohotkey.exe stderr.ahk 2> error.txt
FileAppend, Goodbye`, World!, stderr ; requires AutoHotkey_N
Or with the current AutoHotkey_L:
(documentation on this behavior: http://www.autohotkey.net/~Lexikos/AutoHotkey_L/docs/commands/FileAppend.htm)
FileAppend, Goodbye`, World!, *
AutoIt
ConsoleWriteError("Goodbye, World!" & @CRLF)
Avail
Error: "Goodbye, World!";
AWK
To print a message to standard error, pipe it through a shell command:
BEGIN {
print "Goodbye, World!"| "cat 1>&2"
}
Or write to /dev/stderr:
BEGIN {
print "Goodbye, World!" > "/dev/stderr"
}
With gawk, mawk and nawk: a special feature associates "/dev/stderr" with standard error. The manuals of gawk and mawk describe this feature; nawk also has this feature.
Other implementations might try to open /dev/stderr as a file. Some Unix clones, like BSD, have a /dev/stderr device node that duplicates standard error, so this code would still work. Some systems have no such device node, so this code would fail. We recommend "cat 1>&2", which is more portable, and works with any Unix clone.
BASIC
Applesoft BASIC
REM FILE-BASED OUTPUT REDIRECTION
0 D$ = CHR$ (4):F$ = "DEV/STDERR": PRINT D$"OPEN"F$: PRINT D$"CLOSE"F$: PRINT D$"APPEND"F$: PRINT D$"WRITE"F$
1 PRINT "GOODBYE, WORLD!"
2 PRINT D$"CLOSE"F$
REM OUTPUT ROUTINE REDIRECTION
3 FOR I = 768 TO 802: READ B: POKE I,B: NEXT : POKE 54,0: POKE 55,3: CALL 1002: DATA 72,173,34,3,208,8,169,191,141,34,3,32,240,253,104,201,141,208,12,169,0,141,34,3,169,135,32,240,253,169,141,76,240,253,0
4 O$ = CHR$ (111):D$ = CHR$ (100): PRINT "G" + O$ + O$ + D$ + CHR$ (98) + CHR$ (121) + CHR$ (101) + ", W" + O$ + CHR$ (114) + CHR$ (108) + D$ + "!"
5 POKE 54,240: POKE 55,253: CALL 1002
BaCon
EPRINT "Goodbye, World!"
BASIC256
onerror errortrap
throwerror 99
end
errortrap:
print "Goodbye World!"
return
Chipmunk Basic
10 cls
20 on error goto 50
30 error 99 : we force an error
40 end
50 rem ManejoErrores
60 print "Goodbye World!"
70 cont
QBasic
ON ERROR GOTO ManejoErrores
ERROR 99
END
ManejoErrores:
PRINT "Googbye World!"
RESUME
ZX Spectrum Basic
On the ZX Spectrum, standard error is on stream 1:
10 PRINT #1;"Goodbye, World!"
20 PAUSE 50: REM allow time for the user to see the error message
Batch File
1>&2 echo Goodbye, World!
The redirection operator 1>&2
causes all output on stream 1 (standard out) to be redirected to stream 2 (standard error).
The redirection can be moved to the end of the line, too.
BBC BASIC
The program must be compiled as a console application for this to work.
STD_ERROR_HANDLE = -12
SYS "GetStdHandle", STD_ERROR_HANDLE TO @hfile%(1)
PRINT #13, "Goodbye, World!"
QUIT
Blade
import io
io.stderr.write('Goodbye, World!')
C
Unlike puts(), fputs() does not append a terminal newline.
#include <stdio.h>
int main()
{
fprintf(stderr, "Goodbye, ");
fputs("World!\n", stderr);
return 0;
}
C#
static class StdErr
{
static void Main(string[] args)
{
Console.Error.WriteLine("Goodbye, World!");
}
}
C++
#include <iostream>
int main() {
std::cerr << "Goodbye, World!\n";
}
Clojure
(binding [*out* *err*]
(println "Goodbye, world!"))
CLU
start_up = proc ()
stream$putl(stream$error_output(), "Goodbye, World!")
end start_up
CMake
Most messages go to standard error.
message("Goodbye, World!")
The message cannot be a keyword; message("STATUS")
never prints "STATUS", but message("" "STATUS")
does work.
COBOL
Using fixed format.
program-id. ehello.
procedure division.
display "Goodbye, world!" upon syserr.
stop run.
CoffeeScript
console.warn "Goodbye, World!"
Common Lisp
(format *error-output* "Goodbye, world!~%")
D
import std.stdio;
void main () {
stderr.writeln("Goodbye, World!");
}
Alternative Version
import tango.io.Stdout;
void main () {
Stderr("Goodbye, World!").newline;
}
Dart
import 'dart:io';
void main() {
stderr.writeln('Goodbye, World!');
}
Delphi
program Project1;
{$APPTYPE CONSOLE}
begin
WriteLn(ErrOutput, 'Goodbye, World!');
end.
dt
"Goodbye, World!" epl
Dylan.NET
One Line version:
Console::get_Error()::WriteLine("Goodbye World!")
Goodbye World Program:
//compile using the new dylan.NET v, 11.5.1.2 or later
//use mono to run the compiler
#refstdasm mscorlib.dll
import System
assembly stderrex exe
ver 1.1.0.0
class public Program
method public static void main()
Console::get_Error()::WriteLine("Goodbye World!")
end method
end class
Déjà Vu
!write-fragment!stderr !encode!utf-8 "Goodbye, World!\n"
E
stderr.println("Goodbye, World!")
Elixir
IO.puts :stderr, "Goodbye, World!"
Emacs Lisp
In batch mode, message
actually prints to standard error:
(message "Goodbye, World!")
For greater control, princ
can be used with a special printing function:
(princ "Goodbye, World!\n" 'external-debugging-output)
EMal
logLine("Goodbye, World!")
log("Goodbye, World!")
Erlang
io:put_chars(standard_error, "Goodbye, World!\n").
Euphoria
puts(2,"Goodbye, world!\n") -- 2 means output to 'standard error'
F#
eprintfn "%s" "Goodbye, World!"
or you can use the .Net classes
System.Console.Error.WriteLine("Goodbye, World!");
Factor
Start Factor in a terminal for this:
error-stream get [ "Goodbye, World! bbl, crashing" print flush ] with-output-stream*
Fantom
class Main
{
public static Void main ()
{
Env.cur.err.printLine ("Goodbye, World!")
}
}
Forth
outfile-id
stderr to outfile-id
." Goodbye, World!" cr
to outfile-id
Fortran
Normally standard error is associated with the unit 0 but this could be different for different vendors. Therefore since Fortran 2003 there's an intrinsic module which defines the parameter ERROR_UNIT.
program StdErr
! Fortran 2003
use iso_fortran_env
! in case there's no module iso_fortran_env ...
!integer, parameter :: ERROR_UNIT = 0
write (ERROR_UNIT, *) "Goodbye, World!"
end program StdErr
FreeBASIC
' FB 1.05.0 Win64
Open Err As #1
Print #1, "Goodbye World!"
Close #1
Sleep
Frink
staticJava["java.lang.System","err"].println["Goodbye, World!"]
Genie
[indent=4]
/*
Hello, to Standard error, in Genie
valac helloStderr.gs
*/
init
stderr.printf("%s\n", "Goodbye, World!")
- Output:
prompt$ ./helloStderr | wc Goodbye, World! 0 0 0
Go
Built in println now goes to stderr.
package main
func main() { println("Goodbye, World!") }
but the builtin print() and println() functions are not guaranteed to stay in the language. So you should probably use
package main
import ("fmt"; "os")
func main() { fmt.Fprintln(os.Stderr, "Goodbye, World!") }
Groovy
System.err.println("Goodbye, World!")
Haskell
import System.IO
main = hPutStrLn stderr "Goodbye, World!"
Huginn
#! /bin/sh
exec huginn --no-argv -E "${0}" "${@}"
#! huginn
import OperatingSystem as os;
main() {
os.stderr().write( "Goodbye, World!\n" );
return ( 0 );
}
Icon and Unicon
J
stderr
1!:2&5
0 0 $ stderr 'Goodbye, World!'
Java
public class Err{
public static void main(String[] args){
System.err.println("Goodbye, World!");
}
}
JavaScript
and only with cscript.exe
WScript.StdErr.WriteLine("Goodbye, World!");
console.warn("Goodbye, World!")
console.error("Goodbye, World!")//only works if console object exists
OR
throw new Error("Goodbye, World!")//Should work in any browser
Joy
stderr "Goodbye, World!\n" fputchars pop.
jq
jq -n —-arg s 'Goodbye, World!' '$s | stderr | empty'
`stderr` copies its input to STDERR before passing it along the pipeline, and hence the occurrence of `empty` above.
Julia
Julia 0.7 or newer:
println(stderr, "Goodbye, World!")
In versions prior to Julia 0.7, the standard I/O streams were capitalized:
println(STDERR, "Goodbye, World!")
Kotlin
fun main(args: Array<String>) {
System.err.println("Goodbye, World!")
}
Lang
fn.errorln(Goodbye, World!)
langur
writelnErr "Goodbye, world."
Lasso
define stderr(s::string) => {
file_stderr->writeBytes(#s->asBytes)
}
stderr('Goodbye, World!')
Lingo
- Windows:
-- print to standard error
stdErr("Goodbye, World!", TRUE)
-- print to the Windows debug console (shown in realtime e.g. in Systernal's DebugView)
dbgPrint("Goodbye, World!")
- Mac OS X:
sx = xtra("Shell").new()
-- print to standard error
sx.shell_cmd("echo Goodbye, World!>&2")
-- print to system.log (shown in realtime e.g. in Konsole.app)
sx.shell_cmd("logger Goodbye, World!")
Lean
In lean4
def main : IO Unit := do
let stderr ← IO.getStderr
stderr.putStrLn s!"Goodbye, World!"
LLVM
; This is not strictly LLVM, as it uses the C library function "printf".
; LLVM does not provide a way to print values, so the alternative would be
; to just load the string into memory, and that would be boring.
; Additional comments have been inserted, as well as changes made from the output produced by clang such as putting more meaningful labels for the jumps
%struct._iobuf = type { i8* }
$"message" = comdat any
@"message" = linkonce_odr unnamed_addr constant [17 x i8] c"Goodbye, world!\0A\00", comdat, align 1
;-- For discovering stderr (io pipe 2)
declare %struct._iobuf* @__acrt_iob_func(i32)
;--- The declaration for the external C fprintf function.
declare i32 @fprintf(%struct._iobuf*, i8*, ...)
define i32 @main() {
;-- load stderr
%1 = call %struct._iobuf* @__acrt_iob_func(i32 2)
;-- print the message to stderr with fprintf
%2 = call i32 (%struct._iobuf*, i8*, ...) @fprintf(%struct._iobuf* %1, i8* getelementptr inbounds ([17 x i8], [17 x i8]* @"message", i32 0, i32 0))
;-- exit
ret i32 0
}
- Output:
Goodbye, world!
Logtalk
The stream alias "user_error" can be used to print to the "standard error" stream.
:- object(error_message).
% the initialization/1 directive argument is automatically executed
% when the object is compiled and loaded into memory:
:- initialization(write(user_error, 'Goodbye, World!\n')).
:- end_object.
Lua
io.stderr:write("Goodbye, World!\n")
m4
errprint(`Goodbye, World!
')dnl
MANOOL
{{extern "manool.org.18/std/0.3/all"} in Err.WriteLine["Goodbye, World!"]}
Maple
error "Goodbye World"
Mathematica / Wolfram Language
Write[Streams["stderr"], "Goodbye, World!"]
MATLAB / Octave
This prints to standard error, and continues execution
fprintf(2,'Goodbye, World!')
This will not stop further execution, if called from within a script or function.
error 'Goodbye, World!'
Mercury
:- module hello_error.
:- interface.
:- import_module io.
:- pred main(io::di, io::uo) is det.
:- implementation.
main(!IO) :-
io.stderr_stream(Stderr, !IO),
io.write_string(Stderr, "Goodbye, World!\n", !IO).
Metafont
Metafont has no a real way to send a text to the standard output/error nor to a file. Anyway it exists the errmessage
command which will output an error message and prompt the user for action (suspending the interpretation of the source).
errmessage "Error";
message "...going on..."; % if the user decides to go on and not to stop
% the program because of the error.
min
Currently, min has three possibilities for outputting to stderr:
"Goodbye, World!" warn!
"Goodbye, World!" error!
"Goodbye, World!" fatal!
The first two depend on the current log level (and are enabled by default). The last one additionally terminates the program.
ML/I
MCSET S4=1
MCNOTE Goodbye, World!
Miranda
main :: [sys_message]
main = [Stderr "Hello, world!\n"]
Modula-2
MODULE HelloErr;
IMPORT StdError;
BEGIN
StdError.WriteString('Goodbye, World!');
StdError.WriteLn
END HelloErr.
Modula-3
MODULE Stderr EXPORTS Main;
IMPORT Wr, Stdio;
BEGIN
Wr.PutText(Stdio.stderr, "Goodbye, World!\n");
END Stderr.
N/t/roff
The request .tm
prints whatever after it, until and including the newline character, to the standard error. The string parsed to it need not be quoted and will never appear on standard output.
.tm Goodbye, World!
Neko
/**
Hello world, to standard error, in Neko
Tectonics:
nekoc hello-stderr.neko
neko hello-stderr
*/
/* Assume stderr is already open, just need write */
var file_write = $loader.loadprim("std@file_write", 4);
/* Load (and execute) the file_stderr primitive */
var stderr = $loader.loadprim("std@file_stderr", 0)();
file_write(stderr, "Goodbye, World!\n", 0, 16);
- Output:
prompt$ nekoc hello-stderr.neko prompt$ neko hello-stderr Goodbye, World! prompt$ neko hello-stderr 2>/dev/null prompt$
Nemerle
System.Console.Error.WriteLine("Goodbye, World!");
NetRexx
/* NetRexx */
options replace format comments java crossref savelog symbols binary
System.err.println("Goodbye, World!")
Nim
stderr.writeLine "Hello World"
Nu
print -e "Goodbye, World!"
Oberon-2
Oxford Oberon-2
MODULE HelloErr;
IMPORT Err;
BEGIN
Err.String("Goodbye, World!");Err.Ln
END HelloErr.
- Output:
Goodbye, World!
Objective-C
In Objective-C one can use the standard C library and the stderr as in the C language; nonetheless a common way to output to stderr for logging purpose and/or error notification is the NSLog function, that works almost like fprintf(stderr, "..."), save for the fact that the format string is an NSString object, and it also prepends a timestamp.
#import <Foundation/Foundation.h>
int main()
{
fprintf(stderr, "Goodbye, World!\n");
fputs("Goodbye, World!\n", stderr);
NSLog(@"Goodbye, World!");
return 0;
}
OCaml
prerr_endline "Goodbye, World!"; (* this is how you print a string with newline to stderr *)
Printf.eprintf "Goodbye, World!\n"; (* this is how you would use printf with stderr *)
we can also use the out_channel stderr:
output_string stderr "Goodbye, World!\n";
Printf.fprintf stderr "Goodbye, World!\n";
finally the Unix module also provides unbuffered write functions:
let msg = "Goodbye, World!\n" in
ignore(Unix.write Unix.stderr msg 0 (String.length msg)) ;;
Octave
fprintf(stderr, "Goodbye, World!\n");
Oforth
System.Err "Goodbye, World!" << cr
Ol
(print-to stderr "Goodbye, World!")
ooRexx
ooRexx provides a .error object that writes output to the standard error stream.
.error~lineout("Goodbye, World!")
The .error object is a proxy that delegates to a backing stream, so this might be redirected. By default, this delegates to the .stderr object, which can also be used directly.
.stderr~lineout("Goodbye, World!")
or in 'Classic REXX style'
/* REXX ---------------------------------------------------------------
* 07.07.2014 Walter Pachl
* 12.07.2014 WP see Discussion where redirection from within the program is shown
*--------------------------------------------------------------------*/
Say 'rexx serr 2>err.txt directs the stderr output to the file err.txt'
Call lineout 'stderr','Good bye, world!'
Call lineout ,'Hello, world!'
Say 'and this is the error output:'
'type err.txt'
Oz
functor
import Application System
define
{System.showError "Goodbye, World!"}
{Application.exit 0}
end
PARI/GP
error("Goodbye, World!")
Pascal
program byeworld;
begin
writeln(StdErr, 'Goodbye, World!');
end.
Perl
warn "Goodbye, World!\n";
Or:
print STDERR "Goodbye, World!\n";
Phix
puts(2,"Goodbye, World!")
PHP
fprintf(STDERR, "Goodbye, World!\n");
or
file_put_contents("php://stderr","Hello World!\n");
Picat
println(stderr,"Goodbye, World!")
PicoLisp
(out 2 (prinl "Goodbye, World!"))
Pike
werror("Goodbye, World!");
PL/I
display ('Goodbye, World');
PostScript
(%stderr) (w) file dup
(Goodbye, World!
) writestring
closefile
PowerBASIC
STDERR "Goodbye, World!"
PowerShell
Since PowerShell has a slightly different system of pipes and streams (to facilitate easy usage from a host application) the standard Write-Error cmdlet is mainly for sending annotated error messages to the host:
Write-Error "Goodbye, World!"
Note that this outputs more than just the message, because behind the scenes it is an uncaught exception:
Write-Error "Goodbye, World!" : Goodbye, World! + CategoryInfo : NotSpecified: (:) [Write-Error], WriteErrorException + FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorException
To accurately reproduce the behavior of other languages one has to resort to .NET in this case:
[Console]::Error.WriteLine("Goodbye, World!")
PureBasic
ConsoleError() writes the message string (plus a newline) to the standard error output of current program.
Standard error output can be used in conjunction with ReadProgramError() to reads a line from an other programs error output (stderr).
ConsoleError("Goodbye, World!")
Python
import sys
print >> sys.stderr, "Goodbye, World!"
import sys
print("Goodbye, World!", file=sys.stderr)
Works with either:
import sys
sys.stderr.write("Goodbye, World!\n")
R
cat("Goodbye, World!", file=stderr())
Ra
class HelloWorld
**Prints "Goodbye, World!" to standard error**
on start
print to Console.error made !, "Goodbye, World!"
Racket
(eprintf "Goodbye, World!\n")
Raku
(formerly Perl 6)
note "Goodbye, World!";
Retro
'Goodbye,_World! '/dev/stderr file:spew
REXX
version 1
This version will work with those operating systems (hosts)
that support stream output and a STDERR output
stream (by name).
If the stderr name is supported and enabled, the output is written to the terminal.
If not supported or disabled, the output is written to a (disk) file named STDERR.
call lineout 'STDERR', "Goodbye, World!"
version 2
Same as above, but uses a different style and also invokes charout instead of lineout.
msgText = 'Goodbye, World!'
call charout 'STDERR', msgText
version 3
This works on Windows 7 and ooRexx and REGINA
/* REXX ---------------------------------------------------------------
* 07.07.2014 Walter Pachl
* enter the appropriate command shown in a command prompt.
* "rexx serr.rex 2>err.txt"
* or "regina serr.rex 2>err.txt"
* 2>file will redirect the stderr stream to the specified file.
* I don't know any other way to catch this stream
*--------------------------------------------------------------------*/
Parse Version v
Say v
Call lineout 'stderr','Good bye, world!'
Call lineout ,'Hello, world!'
Say 'and this is the error output:'
'type err.txt'
version 4
ARexx with tracing console
/**/
Address command tco
Call writeln stderr,'Good bye, world!'
Call writeln stdout,'Hello, world!'
Ring
fputs(stderr,"Goodbye, World!")
RPL
There is no error console in RPL but all error messages are displayed at the top two lines of the display, which freezes until a key is pressed.
This can be mimicked with the DISP
instruction:
≪ "Hello world!" 1 DISP ≫
Ruby
STDERR.puts "Goodbye, World!"
The following also works, unless you have disabled warnings (ruby command line option "-W0" or set $VERBOSE=nil
)
warn "Goodbye, World!"
Run BASIC
html "<script>
window.open('','error_msg','');
document.write('Goodbye, World!');
</script>""
Run Basic runs in a browser. This opens a new browser window, or a tab in the case of Chrome and some others.
Rust
fn main() {
eprintln!("Hello, {}!", "world");
}
or
fn main() {
use ::std::io::Write;
let (stderr, errmsg) = (&mut ::std::io::stderr(), "Error writing to stderr");
writeln!(stderr, "Bye, world!").expect(errmsg);
let (goodbye, world) = ("Goodbye", "world");
writeln!(stderr, "{}, {}!", goodbye, world).expect(errmsg);
}
or
fn main() {
use std::io::{self, Write};
io::stderr().write(b"Goodbye, world!").expect("Could not write to stderr");
// With some finagling, you can do a formatted string here as well
let goodbye = "Goodbye";
let world = "world";
io::stderr().write(&*format!("{}, {}!", goodbye, world).as_bytes()).expect("Could not write to stderr");
// Clearly, if you want formatted strings there's no reason not to just use writeln!
}
S-lang
() = fputs("Goodbye, World!\n", stderr);
Salmon
standard_error.print("Goodbye, World!\n");
or
include "short.salm";
stderr.print("Goodbye, World!\n");
or
include "shorter.salm";
err.print("Goodbye, World!\n");
or
include "shorter.salm";
se.print("Goodbye, World!\n");
Sather
class MAIN is
main is
#ERR + "Hello World!\n";
end;
end;
Scala
Ad hoc REPL solution
Ad hoc solution as REPL script:
Console.err.println("Goodbye, World!")
Via Java runtime
This is a call to the Java run-time library. Not recommendated.
System.err.println("Goodbye, World!")
Via Scala Console API
This is a call to the Scala API. Recommendated.
Console.err.println("Goodbye, World!")
Short term deviation to err
Console.withOut(Console.err) { println("This goes to default _err_") }
Long term deviation to err
println ("Out not deviated")
Console.setOut(Console.err)
println ("Out deviated")
Console.setOut(Console.out) // Reset to normal
Scheme
(error "Goodbye, World!")
Scilab
error("Goodbye, World!")
sed
Requires /dev/stderr
#n
1 {
s/.*/Goodbye, World!/w /dev/stderr
}
This program requires at least 1 line of input. It changes the first line to "Goodbye, World!" and then prints the first line to standard error. It reads and ignores the remaining lines.
- Test output:
$ echo a | sed -f error.sed >/dev/null
Goodbye, World!
Seed7
$ include "seed7_05.s7i";
const proc: main is func
begin
writeln(STD_ERR, "Goodbye, World!");
end func;
Sidef
STDERR.println("Goodbye, World!");
Slate
inform: 'Goodbye, World!' &target: DebugConsole.
Slope
(write "Goodbye, world!" stderr)
Smalltalk
The details on to which name stderr is bound may vary between Smalltalk dialects. If different, a "Smalltalk at:#Stderr put:<name your stream here>" should provide compatibility.
Stderr nextPutAll: 'Goodbye, World!'
However, all Smalltalks provide a console named "Transcript", where diagnostics is usually sent to (which is convenient, if there is no stderr to look at, as when started in Windows as an exe, vs. a com).
Thus:
Transcript show: 'Goodbye, World!'
will work on all, and is the preferred way to do this.
(and yes, when running UI-less as a console program, the global "Transcript" is usually bound to the stderr stream).
The above tells the stream to write a string; you can also tell the string to print itself onto some stream:
'Goodbye, World!' printOn: Stderr
Both have the same effect.
SNOBOL4
terminal = "Error"
output = "Normal text"
end
Standard ML
TextIO.output (TextIO.stdErr, "Goodbye, World!\n")
Swift
import Foundation
let out = NSOutputStream(toFileAtPath: "/dev/stderr", append: true)
let err = "Goodbye, World!".dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)
out?.open()
let success = out?.write(UnsafePointer<UInt8>(err!.bytes), maxLength: err!.length)
out?.close()
if let bytes = success {
println("\nWrote \(bytes) bytes")
}
- Output:
Goodbye, World! Wrote 15 bytes
Tcl
puts stderr "Goodbye, World!"
Transact-SQL
RAISERROR 'Goodbye, World!', 16, 1
True BASIC
CAUSE error 1, "Goodbye World!"
END
TUSCRIPT
$$ MODE TUSCRIPT
PRINT/ERROR "hello world"
text="goodbye world"
PRINT/ERROR text
- Output:
@@@@@@@@ hello world @@@@@@@@ @@@@@@@@ goodbye world @@@@@@@@
UNIX Shell
echo "Goodbye, World!" >&2
C Shell
echo "Goodbye, World!" >/dev/stderr
This requires /dev/stderr
, a device node from BSD
and some other Unix clones.
This command works with both Bourne Shell and C Shell.
Ursa
out "goodbye, world!" endl console.err
VBA
Sub StandardError()
Debug.Print "Goodbye World!"
End Sub
VBScript
Must work in cscript.exe
WScript.StdErr.WriteLine "Goodbye, World!"
Verbexx
@STDERR "Goodbye, World!\n";
Visual Basic .NET
Module Module1
Sub Main()
Console.Error.WriteLine("Goodbye, World!")
End Sub
End Module
WDTE
io.writeln io.stderr 'Goodbye, World!';
Wren
Fiber.abort("Goodbye, World!")
X86 Assembly
This is known to work on Linux, it may or may not work on other Unix-like systems
Note that it is only 2 characters different from the Assembly example on User Output - text
Prints "Goodbye, World!" to stderr (and there is probably an even simpler version):
section .data
msg db 'Goodbye, World!', 0AH
len equ $-msg
section .text
global _start
_start: mov edx, len
mov ecx, msg
mov ebx, 2
mov eax, 4
int 80h
mov ebx, 1
mov eax, 1
int 80h
XLISP
(DISPLAY "Goodbye, World!" *ERROR-OUTPUT*)
XPL0
The terms "standard output" and "standard error" are not used, but it's trivial to send messages to a variety of devices by specifying their numbers. Normally messages are displayed on the text console, which is device 0. Instead, this example sends the message to the (first) printer, which is device 2.
code Text=12;
Text(2, "Goodbye, World!")
Yabasic
error "Goodbye World!"
Zig
Works with: 0.10.x, 0.11.x, 0.12.0-dev.1357+10d03acdb
Variant with error handling:
const std = @import("std");
pub fn main() std.fs.File.WriteError!void {
const stderr = std.io.getStdErr();
try stderr.writeAll("Goodbye, World!\n");
}
Works with: 0.10.x, 0.11.x, 0.12.0-dev.1357+10d03acdb
Variant with no error handling (useful when debugging):
const std = @import("std");
pub fn main() void {
// Silently returns if writing to stderr fails.
std.debug.print("Goodbye, World!\n", .{});
}
zkl
File.stderr.writeln("Goodbye, World!")
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