Terminal control/Display an extended character
The task is to display an extended (non ASCII) character onto the terminal. For this task, we will display a £ (GBP currency sign).
You are encouraged to solve this task according to the task description, using any language you may know.
Ada
<lang ada>with Ada.Text_IO; use Ada.Text_IO; with Ada.Characters.Latin_1;
procedure Pound is begin
Put(Ada.Characters.Latin_1.Pound_Sign);
end Pound;</lang>
Ada allows Unicode characters in the source, and provides output functions on "wide characters".
<lang ada>with Ada.Wide_Text_IO; use Ada.Wide_Text_IO;
procedure Unicode is begin
Put("札幌");
end Unicode;</lang>
AWK
You can print a literal "£".
<lang awk>BEGIN { print "£" }</lang>
You can print a "£" using the escape sequences that match the encoding of your terminal.
cp437 | "\234" |
---|---|
iso-8859-1 | "\243" |
euc-jp | "\241\362" |
utf-8 | "\302\243" |
gb18030 | "\201\60\204\65" |
<lang awk>BEGIN { print "\302\243" } # if your terminal is utf-8</lang>
BASIC
ZX Spectrum Basic
The ZX Spectrum uses a modified ascii character set that has a uk pound sign at character number 96:
<lang basic>10 PRINT CHR$(96);</lang>
bc
You can print a literal "£".
<lang bc>"£ " quit</lang>
C
<lang c>#include <stdio.h>
int main() { puts("£"); puts("\302\243"); /* if your terminal is utf-8 */ return 0; }</lang>
C++
<lang cpp>#include <iostream>
int main() {
std::cout << static_cast<char>(163); // pound sign return 0;
}</lang>
Forth
The emerging ANS Forth 20xx standard includes an XCHAR wordset which allows manipulation of non-ASCII character sets such as Unicode.
<lang forth>163 xemit \ £, or s" £" type</lang>
Go
<lang go>package main
import "fmt"
func main() {
fmt.Println("£")
}</lang>
Icon and Unicon
Write a given character number, say '163', using char
to convert the integer into a string.
<lang Icon> procedure main ()
write ("£ " || char (163)) # £
end </lang>
J
<lang J> '£' £
'札幌'
札幌</lang>
Java
<lang Java>import java.io.PrintStream; import java.io.UnsupportedEncodingException;
public class Main {
public static void main(String[] args) throws UnsupportedEncodingException { PrintStream writer = new PrintStream(System.out, true, "UTF-8"); writer.println("£"); writer.println("札幌"); }
}</lang>
Locomotive Basic
<lang locobasic>10 PRINT CHR$(163)</lang>
Pascal
<lang Pascal>program pound; uses crt; begin
write(chr( 163 ));
end. </lang>
Perl 6
<lang Perl 6>chr( 163 ).say ;</lang>
PicoLisp
<lang PicoLisp>(prinl (char 26413) (char 24140)) # Sapporo </lang> Output:
札幌
PureBasic
<lang PureBasic>Print(Chr(163))</lang>
£
Python
<lang Python>print u'\u00a3'</lang>
£
REXX
<lang rexx> say d2c(163) /* Assuming the pound sign is 163 on the display codepage */ </lang>
Seed7
A write to a console accepts Unicode characters.
<lang seed7>$ include "seed7_05.s7i";
include "console.s7i";
const proc: main is func
local var text: console is STD_NULL; begin console := open(CONSOLE); write(console, "£"); # Terminal windows often restore the previous # content, when a program is terminated. Therefore # the program waits until Return/Enter is pressed. readln; end func;</lang>
Tcl
Provided the system encoding has a “£” symbol in it, this works: <lang tcl>puts \u00a3</lang> Tcl can output all unicode characters in the BMP, but only if the consumer of the output (terminal, etc.) is able to understand those characters in its current encoding will the output actually make sense. Strictly, this is not a limitation of Tcl but of the environment in which it is placed.