A+B
You are encouraged to solve this task according to the task description, using any language you may know.
A+B ─── a classic problem in programming contests, it's given so contestants can gain familiarity with the online judging system being used.
- Task
Given two integers, A and B.
Their sum needs to be calculated.
- Input data
Two integers are written in the input stream, separated by space(s):
- Output data
The required output is one integer: the sum of A and B.
- Example
input output 2 2 4 3 2 5
11l
<lang 11l>print(sum(input().split(‘ ’, group_delimiters' 1B).map(i -> Int(i))))</lang>
0815
<lang 0815>|x|+%</lang>
360 Assembly
<lang 360asm>* A+B 29/08/2015 APLUSB CSECT
USING APLUSB,R12
LR R12,R15
OPEN (MYDATA,INPUT)
LOOP GET MYDATA,PG read a single record
XDECI R4,PG input A
XDECI R5,PG+12 input B
AR R4,R5 A+B
XDECO R4,PG+24 edit A+B
XPRNT PG,36 print A+B
B LOOP repeat
ATEND CLOSE MYDATA RETURN XR R15,R15
BR R14
LTORG
MYDATA DCB LRECL=24,RECFM=FT,EODAD=ATEND,DDNAME=MYFILE PG DS CL24 record
DC CL12' '
YREGS
END APLUSB
</lang>
- Input:
27 53
123 321
999 1
- Output:
27 53 80
123 321 444
999 1 1000
8th
<lang forth>gets dup . space eval n:+ . cr</lang>
ABAP
<lang ABAP>report z_sum_a_b. data: lv_output type i. selection-screen begin of block input.
parameters: p_first type i, p_second type i.
selection-screen end of block input.
at selection-screen output.
%_p_first_%_app_%-text = 'First Number: '. %_p_second_%_app_%-text = 'Second Number: '.
start-of-selection.
lv_output = p_first + p_second. write : / lv_output.</lang>
Ada
<lang Ada>-- Standard I/O Streams
with Ada.Integer_Text_Io; procedure APlusB is
A, B : Integer;
begin
Ada.Integer_Text_Io.Get (Item => A); Ada.Integer_Text_Io.Get (Item => B); Ada.Integer_Text_Io.Put (A+B);
end APlusB;</lang> Using appropriate user defined types: <lang Ada>with Ada.Text_IO;
procedure A_Plus_B is
type Small_Integers is range -2_000 .. +2_000; subtype Input_Values is Small_Integers range -1_000 .. +1_000; package IO is new Ada.Text_IO.Integer_IO (Num => Small_Integers); A, B : Input_Values;
begin
IO.Get (A); IO.Get (B); IO.Put (A + B, Width => 4, Base => 10);
end A_Plus_B;</lang>
Agena
Tested with Agena 2.9.5 Win32 <lang agena>scope
local f := trim( io.read() ) split " "; # read a line and split into fields local a := tonumber( f[ 1 ] ); local b := tonumber( f[ 2 ] ); print( a + b )
epocs</lang>
Aime
<lang aime>file f; list l;
f_affix(f, "/dev/stdin"); f_list(f, l, 0); o_integer(atoi(l[0]) + atoi(l[1])); o_newline();</lang>
ALGOL 68
Console
<lang algol68>print((read int + read int))</lang> Input:
1 2
- Output:
+3
File
<lang algol68>open(stand in, "input.txt", stand in channel); open(stand out, "output.txt", stand out channel); print((read int + read int))</lang> Input "input.txt":
3 4
Output "output.txt":
+7
ALGOL W
<lang algolw>begin
integer a, b; read( a, b ); write( a + b )
end.</lang>
ANTLR
Apex
<lang Apex>
static Integer sumOfTwoNums(Integer A, Integer B) {
return A + B;
}
System.debug('A = 50 and B = 25: ' + sumOfTwoNums(50, 25)); System.debug('A = -50 and B = 25: ' +sumOfTwoNums(-50, 25)); System.debug('A = -50 and B = -25: ' +sumOfTwoNums(-50, -25)); System.debug('A = 50 and B = -25: ' +sumOfTwoNums(50, -25));
Output A = 50 and B = 25: 75 A = -50 and B = 25: -25 A = -50 and B = -25: -75 A = 50 and B = -25: 25
</lang>
APL
<lang APL> ⎕+⎕ </lang>
AppleScript
Open the AppleScript Editor and save this as A+B.scpt on your Desktop <lang AppleScript>on run argv
try
return ((first item of argv) as integer) + (second item of argv) as integer
on error
return "Usage with -1000 <= a,b <= 1000: " & tab & " A+B.scpt a b"
end try
end run</lang>
To make this run in Terminal open the Terminal.app and type osascript ~/Desktop/A+B.scpt -3 78 followed by enter.
Result: 75
Arc
<lang Arc> (prn (+ (read)
(read)))
</lang>
Argile
<lang Argile>(: Standard input-output streams :) use std, array Cfunc scanf "%d%d" (&val int a) (&val int b) printf "%d\n" (a + b)</lang> <lang Argile>(: Input file : input.txt :) (: Output file: output.txt :) use std, array let in = fopen "input.txt" "r" let out = fopen "output.txt" "w" let int x, y. Cfunc fscanf in "%d%d" (&x) (&y) (:fscanf not yet defined in std.arg:) fprintf out "%d\n" (x+y) fclose in fclose out</lang>
ARM Assembly
Todo: -need to print numbers w/o the leading 0's. Replace them with spaces, so alignment is still the same.
Read two strings from stdin, convert to integers calculate their sum, print to stdout. A valid int is a value between -2^31 (-2147483647) and 2^31-1 (2147483647). We do not allow -2147483648 as input, but it is a valid result. E.g. -1 -2147483647. Maximum number of digits is 10. Leading 0's are counted as number length. We read signed values. We ignore leading '+'s and allow '-' for negative values. If multiple plus or minus signs precede a number, only the last one counts. minval and maxval can be used to specify any valid range, (e.g. -1000 and +1000). The range is inclusive. If 0 is specified for both ranges, range checks are not done.
Tested on RaspberryPi model B (GNU/Linux, ARMv6) Save in ab.S Build with: <lang ARM_Assembly>as -o ab.o ab.S ld -o a.out ab.o</lang>
<lang ARM_Assembly>.data
.align 2 .code 32
.section .rodata
.align 2 .code 32
overflow_msg: .ascii "Invalid number. Overflow.\n" overflow_msglen = . - overflow_msg bad_input_msg: .ascii "Invalid input. NaN.\n" bad_input_msglen = . - bad_input_msg range_err_msg: .ascii "Value out of range.\n" range_err_msglen = . - range_err_msg io_error_msg: .ascii "I/O error.\n" io_error_msglen = . - range_err_msg
sys_exit = 1 sys_read = 3 sys_write = 4 max_rd_buf = 14 lf = 10 m10_9 = 0x3b9aca00 maxval = 1000 minval = -1000
.text
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @@ void main() @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
.align 2 .code 32 .type _start STT_FUNC .global _start
_start:
stmfd sp!, {r4,r5,lr}
.read_lhs:
ldr r0, =max_rd_buf bl readint mov r4, r0 bl printint mov r0, r4 bl range_check
.read_rhs:
ldr r0, =max_rd_buf bl readint mov r5, r0 bl printint mov r0, r5 bl range_check
.sum_and_print:
adds r0, r4, r5 bvs overflow bl printint
.main_exit:
mov r0, #0
bl exit
ldmfd sp!, {r4,r5,pc}
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @@ Read from stdin until we encounter a non-digit, or we have read bytes2rd digits. @@ Ignore leading spaces. @@ Return value to the caller converted to a signed int. @@ We read positive values, but if we read a leading '-' sign, we convert the @@ return value to two's complement. @@ The argument is max number of bytes to read from stdin. @@ int readint(int bytes2rd) @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
.align 2 .code 32 .type readint STT_FUNC .global readint
readint:
stmfd sp!, {r4,r5,r6,r7,lr}
@@@@@@@@@@@@@@@
@@ r0 : #0 for stdin arg to read.
@@ r1 : ptr to current pos in local buffer.
@@ r2 : #1 to read one byte at a time.
@@ r3,r7 : tmp.
@@ r4 : number of bytes read.
@@ r5 : value of current byte.
@@ r6 : 0 while we are reading leading spaces.
@@@@@@@@@@@@@@@
sub sp, sp, r0
mov r1, sp
mov r3, #0
push {r3} @ sp,#4: local var @isnegative. return in r1. Default value is 0/false. Positive number.
push {r0} @ sp,#0: local var @maxbytes. const.
mov r2, #1
mov r4, #0
mov r6, #0 b .rd
@ we get here if r6 is 0. @ if space, goto .rd. @ else set r6 to 1 and goto .noleading. .leadchk:
mov r0, r5 bl isspace cmp r0, #1 beq .rd
.sign_chk:
mov r0, r5
push {r1}
bl issign
cmp r0, #1
streq r0, [sp,#8] @ sp,#4 + 4 for the pushed r1.
movhi r1, #0
strhi r1, [sp,#8] @ sp,#4 + 4 for the pushed r1.
pop {r1}
bhs .rd
mov r6, #1 b .noleading
.rd:
mov r0, #0 bl read cmp r0, #1 bne .sum_digits_eof @ eof mov r5, #0 ldrb r5, [r1] cmp r6, #0 beq .leadchk
.noleading:
mov r0, r5 bl isdigit cmp r0, #1 bne .sum_digits_nan @ r5 is non-digit
add r4, r4, #1 add r1, r1, #1 @ max chars to read is received in arg[0], stored in local var at sp. @ Only 10 can be valid, so the default of 12 leaves space for separator. ldr r3, [sp] cmp r4, r3 beq .sum_digits_maxrd @ max bytes read. b .rd
@@@@@@@@@@@@@@@ @ We have read r4 (0..arg[0](default 12)) digits when we get here. Go through them @ and add/mul them together to calculate a number. @ We multiply and add the digits in reverse order to simplify the multiplication. @@@@@@@@@@@@@@@ @ r0: return value. @ r1: local variable for read buffer. @ r2: tmp for conversion. @ r3,r6,r7: tmp @ r4: number of chars we have read. @ r5: multiplier 1,10,100. @@@@@@@@@@@@@@@
.sum_digits_nan:
mov r0, r5 bl isspace cmp r0, #1 bne bad_input
.sum_digits_maxrd: .sum_digits_eof:
mov r0, #0 mov r5, #1
.count:
cmp r4, #0 beq .readint_ret sub r4, r4, #1 sub r1, #1 ldrb r2, [r1] sub r2, r2, #48 mov r3, r2
@ multiply r3 (char value of digit) with r5 (multiplier). @ possible overflow. @ MI means negative. @ smulls multiples two signed 32 bit vals and returns a 64 bit result. @ If we get anything in r7, the value has overflowed. @ having r2[31] set is overflow too. smulls r2, r7, r3, r5 cmp r7, #0 bne overflow cmp r2, #0 bmi overflow
@@ possible overflow. adds r0, r0, r2 bvs overflow bmi overflow
@@ end of array check. @@ check is needed here too, for large numbers, since 10 billion is not a valid 32 bit val. cmp r4, #0 beq .readint_ret
@@ multiple multiplier by 10. @@ possible overflow. @@ too many digits is input. happens if input is more than 10 digits. mov r3, #10 mov r6, r5 smulls r5, r7, r3, r6 cmp r7, #0 bne overflow cmp r5, #0 bmi overflow b .count
.readint_ret:
ldr r1, [sp,#4] @ read isnegative value.
cmp r1, #0
rsbne r0, r0, #0
pop {r2}
add sp, sp, #4
add sp, sp, r2
ldmfd sp!, {r4,r5,r6,r7,pc}
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @@ int isdigit(int) @@ #48..#57 ascii range for '0'..'9'. @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
.align 2 .code 32 .type isdigit STT_FUNC .global isdigit
isdigit:
stmfd sp!, {r1,lr}
cmp r0, #48
blo .o_range
cmp r0, #57
bhi .o_range
mov r0, #1
ldmfd sp!, {r1,pc}
.o_range:
mov r0, #0
ldmfd sp!, {r1,pc}
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @@ int isspace(int) @@ ascii space = 32, tab = 9, newline 10, cr = 13. @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
.align 2 .code 32 .type isspace STT_FUNC .global isspace
isspace:
stmfd sp!, {lr}
cmp r0, #32
cmpne r0, #9
cmpne r0, #10
cmpne r0, #13
beq .is_space
mov r0, #0
ldmfd sp!, {pc}
.is_space:
mov r0, #1
ldmfd sp!, {pc}
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @@ Return value is 1 for '-' 2 for '+'. @@ int isspace(int) @@ '+' = 43 and '-' = 45. @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
.align 2 .code 32 .type issign STT_FUNC .global issign
issign:
stmfd sp!, {lr}
cmp r0, #43
beq .plus_sign
cmp r0, #45
beq .minus_sign
mov r0, #0
ldmfd sp!, {pc}
.plus_sign:
mov r0, #2
ldmfd sp!, {pc}
.minus_sign:
mov r0, #1
ldmfd sp!, {pc}
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @@ ARGS: @@ r0 : in out arg (current int value) @@ r1 : in out arg (ptr to current pos in buffer) @@ r2 : in arg (const increment. 1000_000_000, 100_000_000, 10_000_000, 1000_000, 100_000, 10_000, 1000, 100, 10, 1.) @@ @@ r4 : tmp local. Outer scope must init to #10 and count down to #0. @@ Special case is INTMAX. Must init to 5 if r4 >= 1000_000_000 (0x3b9aca00 = m10_9). @@ r5: tmp @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
.align 2 .code 32 .type get_digit STT_FUNC .global get_digit
get_digit:
stmfd sp!, {r2,r4,r5,lr}
ldr r5, =m10_9
cmp r2, r5
movlo r4, #10
movhs r4, #5
.get_digit_loop:
sub r4, #1
mul r5, r4, r2
cmp r0, r5
blo .get_digit_loop
sub r0, r5
add r4, r4, #48
strb r4, [r1], #1
ldmfd sp!, {r2,r4,r5,pc}
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @@ A quick way to divide (numbers evenly divisible by 10) by 10. @@ Most ARM cpus don't have a divide instruction, @@ so this will always work. @@ A generic div function is long and not needed here. @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
.align 2
.div_r2_10:
stmfd sp!, {r0,r1,r3,lr}
mov r0, #1
mov r1, #10
.find_x:
mul r3, r0, r1;
cmp r3, r2
movlo r0, r3
blo .find_x
mov r2, r0
ldmfd sp!, {r0,r1,r3,pc}
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @@ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
.align 2
.print_neg_sign:
stmfd sp!, {r0,r1,r2,lr}
@ 45 = '-'
mov r1, #45
push {r1}
mov r2, #1
@ r1 is ptr to our local variable (holding '-').
mov r1, sp
mov r0, #1
bl write
cmp r0, #0
blne io_error
pop {r1}
ldmfd sp!, {r0,r1,r2,pc}
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @@ void printint(int val) @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
.align 2 .code 32 .type printint STT_FUNC .global printint
printint:
stmfd sp!, {r4,r5,r6,lr}
mov r1, #1
ands r1, r1, r0, LSR #31
rsbne r0, r0, #0
blne .print_neg_sign
sub sp, sp, #20
mov r1, sp
mov r3, sp
ldr r2, =m10_9
.getc_loop:
bl get_digit cmp r2, #1 beq .exit_getc_loop bl .div_r2_10 b .getc_loop
.exit_getc_loop:
ldr r0, =lf strb r0, [r1], #1
sub r2, r1, r3
mov r1, r3
mov r0, #1
bl write
cmp r0, #0
blne io_error
add sp, sp, #20
ldmfd sp!, {r4,r5,r6,pc}
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @@ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
.align 2
range_check:
stmfd sp!, {r4,r5,lr}
ldr r4, =minval
ldr r5, =maxval
cmp r4, #0
cmpeq r5, #0
beq .skip_range_check
cmp r0, r4
bllt range_err
cmp r0, r5
blgt range_err
.skip_range_check:
ldmfd sp!, {r4,r5,pc}
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ void range_err() @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
.align 2
range_err:
stmfd sp!, {lr}
ldr r2, =range_err_msglen
ldr r1, =range_err_msg
mov r0, #2
bl write
mov r0, #-1
bl exit
ldmfd sp!, {pc}
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ void overflow() @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
.align 2
overflow:
stmfd sp!, {lr}
ldr r2, =overflow_msglen
ldr r1, =overflow_msg
mov r0, #2
bl write
mov r0, #-1
bl exit
ldmfd sp!, { pc}
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ void bad_input() @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
.align 2
bad_input:
stmfd sp!, {lr}
ldr r2, =bad_input_msglen
ldr r1, =bad_input_msg
mov r0, #2
bl write
mov r0, #-1
bl exit
ldmfd sp!, {pc}
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ void io_error() @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
.align 2
io_error:
stmfd sp!, {lr}
ldr r2, =io_error_msglen
ldr r1, =io_error_msg
mov r0, #2
bl write
mov r0, #-1
bl exit
ldmfd sp!, {pc}
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ void exit(int) @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
.align 2 .code 32 .type _start STT_FUNC .global exit
exit:
stmfd sp!, {r7, lr}
ldr r7, =sys_exit
svc #0
ldmfd sp!, {r7, pc}
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ int write(int fd,char*buf,int len) @ Return 0 if we successfully write all bytes. Otherwise return the error code. @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
.align 2 .code 32 .type _start STT_FUNC .global write
write:
stmfd sp!, {r4,r7, lr}
mov r4, r2
.wr_loop:
ldr r7, =sys_write
svc #0
@ If r0 is negative, it is more than r4 with LO (unsigned <).
cmp r0, r4
sublo r4, r0
blo .wr_loop
moveq r0, #0
ldmfd sp!, {r4,r7, pc}
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ int read(int fd,char*buf,int len) @ Return number of bytes successfully read. Ignore errors. @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
.align 2 .code 32 .type _start STT_FUNC .global read
read:
stmfd sp!, {r7, lr}
ldr r7, =sys_read
svc #0
cmp r0, #0
movlt r0, #0
ldmfd sp!, {r7, pc}
</lang>
ATS
<lang ATS> (* ****** ****** *) //
- include
"share/atspre_staload.hats" // staload UN = $UNSAFE // (* ****** ****** *)
staload "libc/SATS/stdio.sats"
(* ****** ****** *)
implement main0() = let
var A: int var B: int val () = $extfcall (void, "scanf", "%d%d", addr@A, addr@B) // end of [val]
in
println! ($UN.cast2int(A) + $UN.cast2int(B))
end // end of [main0]
(* ****** ****** *) </lang>
AutoHotkey
<lang AutoHotkey>InputBox, input , A+B, Two integer numbers`, separated by space. StringSplit, output, input, %A_Space% msgbox, % output1 . "+" . output2 "=" output1+output2</lang>
AutoIt
<lang AutoIt>;AutoIt Version: 3.2.10.0 $num = "45 54" consolewrite ("Sum of " & $num & " is: " & sum($num)) Func sum($numbers)
$numm = StringSplit($numbers," ") Return $numm[1]+$numm[$numm[0]]
EndFunc</lang>
Example2
This version can handle any amount of numbers in the input: <lang AutoIt>ConsoleWrite("# A+B:" & @CRLF)
Func Sum($inp) Local $num = StringSplit($inp, " "), $sum = 0 For $i = 1 To $num[0]
- ~ ConsoleWrite("# num["&$i&"]
- " & $num[$i] & @CRLF) ;;
$sum = $sum + $num[$i] Next Return $sum EndFunc ;==>Sum
$inp = "17 4" $res = Sum($inp) ConsoleWrite($inp & " --> " & $res & @CRLF)
$inp = "999 42 -999" ConsoleWrite($inp & " --> " & Sum($inp) & @CRLF)
- In calculations, text counts as 0,
- so the program works correctly even with this input
Local $inp = "999x y 42 -999", $res = Sum($inp) ConsoleWrite($inp & " --> " & $res & @CRLF)</lang>
- Output:
# A+B: 17 4 --> 21 999 42 -999 --> 42 999x y 42 -999 --> 42
AWK
<lang awk>{print $1 + $2}</lang>
Batch File
Prompts version <lang dos>::aplusb.cmd @echo off setlocal set /p a="A: " set /p b="B: " set /a c=a+b echo %c% endlocal</lang> All on the commandline version <lang dos>::aplusb.cmd @echo off setlocal set a=%1 set b=%2 set /a c=a+b echo %c% endlocal</lang> Formula on the command line version <lang dos>::aplusb.cmd @echo off setlocal set /a c=%~1 echo %c% endlocal</lang> Example of 'Formula on the command line version'
>aplusb 123+456 579 >aplusb "1+999" 1000
Parse the input stream version (thanks to Tom Lavedas on alt.msdos.batch.nt) <lang dos>::aplusb.cmd @echo off setlocal set /p a="Input stream: " call :add %a% echo %res% endlocal goto :eof
- add
set /a res=res+%1 shift if "%1" neq "" goto :add</lang> Example of 'parse the input stream version'
>aplusb Input stream: 1234 5678 6912 >aplusb Input stream: 123 234 345 456 567 678 789 890 4082
BASIC
<lang qbasic>DEFINT A-Z
tryagain: backhere = CSRLIN INPUT "", i$ i$ = LTRIM$(RTRIM$(i$)) where = INSTR(i$, " ") IF where THEN
a = VAL(LEFT$(i$, where - 1)) b = VAL(MID$(i$, where + 1)) c = a + b LOCATE backhere, LEN(i$) + 1 PRINT c
ELSE
GOTO tryagain
END IF</lang>
Applesoft BASIC
<lang ApplesoftBasic>10 BH = PEEK(37) 20 INPUT ""; A$ : I$ = A$ : VTAB BH : A = PEEK(40) + PEEK(41) * 256 : FOR S = 0 TO 39 : IF PEEK(A + S) = 160 THEN NEXT S : S = 0 40 IF LEN(I$) THEN IF MID$(I$, LEN(I$), 1) = " " THEN I$ = MID$(I$, 1, LEN(I$) - 1) : GOTO 40RTRIM 50 IF LEN(I$) < 3 THEN 10"TRY AGAIN 60 FOR WHERE = 1 TO LEN(I$) : IF MID$(I$, WHERE, 1) <> " " THEN NEXT WHERE : GOTO 10"TRY AGAIN 70 A% = VAL(LEFT$(I$, WHERE - 1)) 80 B% = VAL(MID$(I$, WHERE + 1, LEN(I$))) 90 C% = A% + B% 100 VTAB BH 110 HTAB LEN(A$) + 2 + S 120 PRINT C%</lang>
BaCon
<lang qbasic>' A+B INPUT d$ PRINT VAL(TOKEN$(d$, 1)) + VAL(TOKEN$(d$, 2))</lang>
BASIC256
<lang basic256>dim a(2) input "Enter two numbers seperated by a space?", t$ a = explode(t$," ") print t$ + " " + (a[0] + a[1])</lang>
BBC BASIC
<lang bbc> REPEAT
hereY% = VPOS
INPUT LINE "" q$
hereX% = LEN(q$) + 1
WHILE LEFT$(q$, 1) = " "
q$ = MID$(q$, 2)
ENDWHILE
space% = INSTR(q$, " ")
IF space% THEN
a = VAL(LEFT$(q$, space% - 1))
b = VAL(MID$(q$, space% + 1))
PRINT TAB(hereX%, hereY%) ; a + b
ENDIF
UNTIL FALSE</lang>
That seems overly complicated. What's wrong with: <lang bbc> REPEAT
INPUT LINE "" q$
space% = INSTR(q$," ")
PRINT VAL LEFT$(q$,space%-1) + VAL MID$(q$,space%+1)
UNTIL FALSE</lang>
Commodore BASIC
<lang qbasic>10 PRINT "ENTER TWO NUMBERS, SEPARATED BY A SPACE: "; 20 INPUT X$ 30 I = 1 : N = LEN(X$) 40 IF MID$(X$,I,1)<>" " AND I<N THEN I = I+1 : GOTO 40 50 A = VAL(LEFT$(X$,I)) 60 B = VAL(RIGHT$(X$,N-1)) 70 PRINT A+B</lang>
FreeBASIC
<lang freebasic>' fb 1.05.0 Win64
Dim As Integer a, b Do
Print "Enter two integers separated by a space : "; Input "", a, b If Abs(a) > 1000 OrElse Abs(b) > 1000 then Print "Both numbers must be in the interval [-1000, 1000] - try again" Print Else Print "Their sum is"; a + b Exit Do End If
Loop Print Print "Press any key to quit the program" Sleep</lang>
FUZE BASIC
<lang qbasic>INPUT n$ PRINT VAL(LEFT$(n$,(LEN(STR$(VAL(n$))))))+VAL(RIGHT$(n$,(LEN(n$)-LEN(STR$(VAL(n$)))-1))) END</lang>
IS-BASIC
<lang IS-BASIC>100 DO 110 INPUT PROMPT "Ener two integers separated by a comma: ":A,B 120 IF ABS(A)>1000 OR ABS(B)>1000 OR IP(A)<>A OR IP(B)<>B THEN 130 PRINT "Both integers must be in the interval [-1000..1000] - try again.":PRINT 140 ELSE 150 PRINT "Their sum is";A+B 160 EXIT DO 170 END IF 180 LOOP</lang>
Liberty BASIC
<lang lb>input, n$ print eval(word$(n$,1);" + ";word$(n$,2))</lang>
Sinclair ZX81 BASIC
<lang basic>10 INPUT A$ 20 LET I=1 30 IF A$(I)=" " THEN GOTO 60 40 LET I=I+1 50 GOTO 30 60 PRINT VAL A$( TO I-1)+VAL A$(I+1 TO )</lang>
bc
<lang bc>read() + read()</lang>
Befunge
<lang befunge>&&+.@</lang>
Bracmat
filter is a pattern that checks that input is a non-fractional number not less than -1000 and not greater than 1000. The filter is applied to each input.
<lang bracmat>( out
$ ( put$"Enter two integer numbers between -1000 and 1000:"
& (filter=~/#%:~<-1000:~>1000) & get':(!filter:?a) (!filter:?b) & !a+!b | "Invalid input. Try again" )
);</lang>
Brainf***
<lang brainf***>INPUT AND SUMMATION TODO if first symbol is a minus sign print Qgo awayQ +> initialize sum to one ++[ loop for each input ie twice
[>>,----------[----------------------[-<+>]]<] eat digits until space or newline
<[<]>>>
>[< until no next digit
---------------- subtract ascii zero minus what we subtracted above
[->++++++++++<] add ten timess that to the next digit
<[->+<]<[->+<]>> shift sum and loop counter
>>
]
<---------------- subtract as above from last digit as well
[-<<+>>] add to sum
<-
] <- subtract original one from sum
OUTPUT [ while a number divided by ten is bigger than zero
[->+<[->+<[->+<[->+<[->+<[->+<[->+<[->+<[->+<[->--------->+<<[->>>+<<<]]]]]]]]]]>>>[-<<<+>>>]<<<] divide by ten >++++++++++++++++++++++++++++++++++++++++++++++++> convert remainder to ascii digit
] <[.<<] print ascii digits</lang>
Brat
<lang brat>numbers = g.split[0,1].map(:to_i) p numbers[0] + numbers[1] #Prints the sum of the input</lang>
Burlesque
<lang burlesque>ps++</lang>
C
<lang c>// Standard input-output streams
- include <stdio.h>
int main() {
int a, b;
scanf("%d%d", &a, &b);
printf("%d\n", a + b);
return 0;
}</lang> <lang c>// Input file: input.txt // Output file: output.txt
- include <stdio.h>
int main() {
freopen("input.txt", "rt", stdin);
freopen("output.txt", "wt", stdout);
int a, b;
scanf("%d%d", &a, &b);
printf("%d\n", a + b);
return 0;
}</lang> <lang c>
- include <stdio.h>
- include <stdlib.h>
int main(int argc, char **argv) //not sure if argv counts as input stream... certainly it is brought here via input stream. {
printf("%d\n", atoi(*(argv+1)) + atoi(*(argv+2)));
return 0;
} </lang>
C#
<lang csharp>using System; using System.Linq;
class Program {
static void Main()
{
Console.WriteLine(Console.ReadLine().Split().Select(int.Parse).Sum());
}
}</lang> Another way (not recommended since it does not work with more than two numbers): <lang csharp>using System;
class Program {
static void Main()
{
string input = Console.ReadLine();
int index = input.IndexOf(" ");
int num1 = int.Parse(input.Substring(0, index));
int num2 = int.Parse(input.Substring(index + 1));
int sum = num1 + num2;
Console.WriteLine(sum.ToString());
}
}</lang>
C++
<lang cpp>// Standard input-output streams
- include <iostream>
using namespace std; int main() {
int a, b; cin >> a >> b; cout << a + b << endl;
}</lang> <lang cpp>// Input file: input.txt // Output file: output.txt
- include <fstream>
using namespace std; int main() {
ifstream in("input.txt");
ofstream out("output.txt");
int a, b;
in >> a >> b;
out << a + b << endl;
return 0;
}</lang>
Ceylon
<lang ceylon>shared void run() {
print("please enter two numbers for me to add");
value input = process.readLine();
if (exists input) {
value tokens = input.split().map(Integer.parse);
if (tokens.any((element) => element is ParseException)) {
print("numbers only, please");
return;
}
value numbers = tokens.narrow<Integer>();
if (numbers.size != 2) {
print("two numbers, please");
}
else if (!numbers.every((Integer element) => -1k <= element <= 1k)) {
print("only numbers between -1000 and 1000, please");
}
else if (exists a = numbers.first, exists b = numbers.last) {
print(a + b);
}
else {
print("something went wrong");
}
}
}</lang>
Clojure
<lang clojure>(println (+ (Integer/parseInt (read-line)) (Integer/parseInt (read-line)))) 3 4 =>7</lang> <lang clojure>(eval (read-string (str "(+ " (read-line) " )") )) 3 3 6</lang>
Translation of Common Lisp version: <lang clojure>(println (+ (read) (read))) 3 4 7</lang>
Safely and without reader tricks:
<lang clojure>(let [ints (map #(Integer/parseInt %) (clojure.string/split (read-line) #"\s") )]
(println (reduce + ints)))
3 4 =>7</lang>
or same as above, but without "let": <lang clojure>(println (reduce + (map #(Integer/parseInt %) (clojure.string/split (read-line) #"\s") )))
3 4 =>7</lang>
COBOL
<lang cobol> IDENTIFICATION DIVISION.
PROGRAM-ID. A-Plus-B.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 A PIC S9(5).
01 B PIC S9(5).
01 A-B-Sum PIC S9(5).
PROCEDURE DIVISION.
ACCEPT A
ACCEPT B
ADD A TO B GIVING A-B-Sum
DISPLAY A-B-Sum
GOBACK
.</lang>
CoffeeScript
<lang html4strict><html> <script type="text/javascript" src="http://jashkenas.github.com/coffee-script/extras/coffee-script.js"></script> <script type="text/coffeescript"> a = window.prompt 'enter A number', b = window.prompt 'enter B number', document.getElementById('input').innerHTML = a + ' ' + b sum = parseInt(a) + parseInt(b) document.getElementById('output').innerHTML = sum </script> <body>
</body> </html></lang>
<lang coffeescript> { stdin } = process sum = ( a, b ) -> a + b
display = ( messages... ) -> console.log messages...
parse = ( input ) ->
parseInt x for x in ( x.trim() for x in input.split ' ' ) when x?.length
check = ( numbers... ) ->
return no for x in numbers when isNaN x return no for x in numbers when not ( -1000 < x < 1000 ) yes
prompt = ->
display 'Please enter two integers between -1000 and 1000, separated by a space:'
stdin.once 'data', ( data ) ->
[ a, b ] = parse data
if check a, b
display "#{ a } + #{ b } = #{ sum a, b }"
else
display "Invalid input: #{ a }, #{ b }"
do prompt
return
- Resume input and set the incoming encoding.
stdin.resume() stdin.setEncoding 'utf8'
- Start the main loop.
do prompt </lang>
Common Lisp
<lang lisp>(write (+ (read) (read)))</lang>
Component Pascal
BlackBox Component Builder <lang oberon2> MODULE AB; IMPORT StdLog, DevCommanders,TextMappers;
PROCEDURE DoAB(x,y: INTEGER); BEGIN
StdLog.Int(x);StdLog.Int(y);StdLog.Int(x + y);StdLog.Ln;
END DoAB;
PROCEDURE Go*; VAR
params: DevCommanders.Par;
s: TextMappers.Scanner;
p : ARRAY 2 OF INTEGER;
current: INTEGER;
BEGIN
current := 0;
params := DevCommanders.par;
s.ConnectTo(params.text);
s.SetPos(params.beg);
s.Scan;
WHILE(~s.rider.eot) DO
IF (s.type = TextMappers.int) THEN
p[current] := s.int; INC(current);
END;
s.Scan;
END;
IF current = 2 THEN DoAB(p[0],p[1]) END;
END Go;
END AB.
</lang>
Execute: AB.Go 12 23 ~
- Output:
12 23 35
Computer/zero Assembly
<lang czasm> STP ; wait for input a: 0 b: 0
LDA a
ADD b
STP</lang>
Crystal
<lang ruby>puts gets.not_nil!.split.map(&.to_i).sum</lang>
The not_nil! call on gets is needed because gets might return nil and the compiler forces us to deal with it.
In the case of nil a runtime exception will be thrown.
To handle the nil case we could do:
<lang ruby>if line = gets
puts line.split.map(&.to_i).sum
else
puts "No input"
end</lang>
D
From Console
<lang d>import std.stdio, std.conv, std.string;
void main() {
string[] r;
try
r = readln().split();
catch (StdioException e)
r = ["10", "20"];
writeln(to!int(r[0]) + to!int(r[1]));
}</lang>
- Output:
30
From File
<lang d>void main() {
import std.stdio, std.file;
immutable ab = "sum_input.txt".slurp!(int, int)("%d %d")[0];
"sum_output.txt".File("w").writeln(ab[0] + ab[1]);
}</lang>
Dart
<lang Dart>import 'dart:io';
// a little helper function that checks if the string only contains // digits and an optional minus sign at the front bool isAnInteger(String str) => str.contains(new RegExp(r'^-?\d+$'));
void main() {
while(true) {
String input = stdin.readLineSync();
var chunks = input.split(new RegExp(r'[ ]+')); // split on 1 or more spaces
if(!chunks.every(isAnInteger)) {
print("not an integer!");
} else if(chunks.length > 2) {
print("too many numbers!");
} else if(chunks.length < 2) {
print('not enough numbers!');
} else {
// parse the strings into integers
var nums = chunks.map((String s) => int.parse(s));
if(nums.any((num) => num < -1000 || num > 1000)) {
print("between -1000 and 1000 please!");
} else {
print(nums.reduce((a, b) => a + b));
}
}
}
} </lang>
- Output:
1 2 3 3 4 7
dc
<lang dc>? + psz</lang>
The question mark ? reads and executes a line of input. The user must enter a dc program that pushes two numbers to the stack, such as 2 3 or 5 _1. (The user must use underscore _ for negative numbers.)
DCL
<lang DCL>$ read sys$command line $ a = f$element( 0, " ", line ) $ b = f$element( 1, " ", line ) $ write sys$output a, "+", b, "=", a + b</lang>
Déjà Vu
Console
<lang dejavu>0 for k in split !prompt "" " ": + to-num k !print</lang>
Delphi
Console version. <lang delphi>program SUM;
{$APPTYPE CONSOLE}
uses
SysUtils;
procedure var
s1, s2:string;
begin
ReadLn(s1); Readln(s2); Writeln(StrToIntDef(s1, 0) + StrToIntDef(s2,0));
end.</lang>
DMS
<lang DMS>number a = GetNumber( "Please input 'a'", a, a ) // prompts for 'a' number b = GetNumber( "Please input 'b'", b, b ) // prompts for 'b' Result( a + b + "\n" )</lang>
DWScript
Ghetto GUI version <lang delphi>var a := StrToInt(InputBox('A+B', 'Enter 1st number', '0')); var b := StrToInt(InputBox('A+B', 'Enter 2nd number', '0')); ShowMessage('Sum is '+IntToStr(a+b));</lang>
EchoLisp
<lang scheme> (+ (read-number 1 "value for A") (read-number 2 "value for B")) </lang>
EDSAC order code
The EDSAC does not support input of data while a program is running, so A and B are pre-set to 37 and 28. Other values can of course be substituted: note the slightly idiosyncratic format in which integer data is written (the least significant bit set using an alphabetic character). The result of the computation is displayed in binary in the first address of storage tank 3. <lang edsac>[ A plus B
======== A program for the EDSAC Adds two integers & displays the sum at the top of storage tank 3
Works with Initial Orders 2 ]
[ Set load point & base address ]
T56K [ Load at address 56 ] GK [ Base addr (theta) here ]
[ Orders ]
T96F [ Clear accumulator ] A5@ [ Acc += C(theta + 5) ] A6@ [ Acc += C(theta + 6) ] T96F [ C(96) = Acc; Acc = 0 ]
ZF [ Halt ]
[ Pseudo-orders (data) ]
P18D [ 5@: 18*2 + 1 = 37 ] P14F [ 6@: 14*2 + 0 = 28 ]
[ When loading is finished: ]
EZPF [ Branch to load point ]</lang>
- Output:
00000000001000001
Eiffel
argument(0) contains the path of the executable - thus we start at argument(1) <lang eiffel> class APPLICATION inherit ARGUMENTS create make feature {NONE} -- Initialization make -- Run application. do print(argument(1).to_integer + argument(2).to_integer) end end </lang>
Alternatively ... <lang eiffel> make -- Run application. note synopsis: "[ The specification implies command line input stream and also implies a range for both `A' and `B' (e.g. (-1000 <= A,B <= +1000)). To test in Eiffel Studio workbench, one can set Execution Parameters of "2 2", where the expected output is 4. One may also create other test Execution Parameters where the inputs are out-of-bounds and confirm the failure. ]" do if attached {INTEGER} argument (1).to_integer as a and then attached {INTEGER} argument (2).to_integer as b and then (a >= -1000 and b >= -1000 and a <= 1000 and b <= 1000) then print (a + b) else print ("Either argument 1 or 2 is out-of-bounds. Ensure: (-1000 <= A,B <= +1000)") end end </lang>
Ela
<lang ela>open monad io string list
a'b() = do
str <- readStr putStrLn <| show <| sum <| map gread <| string.split " " <| str
a'b() ::: IO</lang>
- Output:
1 2 3 4 5 6 21
Elena
ELENA 4.x : <lang elena>import extensions;
public program() {
var A := new Integer(); var B := new Integer(); console.loadLine(A,B).printLine(A + B)
}</lang>
Or more generic solution: <lang elena>import system'routines; import extensions;
public program() {
console.printLine(console.readLine()
.split()
.selectBy(__mssg toInt<convertorOp>[0])
.summarize())
}</lang>
Elixir
<lang Elixir>IO.gets("Enter two numbers seperated by a space: ")
|> String.split |> Enum.map(&String.to_integer(&1)) |> Enum.sum |> IO.puts</lang>
Elm
<lang Elm> --To write this function directly run cmd --Type elm-repl to start --Next enter this code sum x y=x+y
--This creates a sum function --When you enter sum A B --You get output as A+B : number --Task done! --END
</lang>
Emacs Lisp
<lang Emacs Lisp>;; Write this code in a file: a+b.el
- Put input.txt in the same directory than a+b.el
- Open a+b.el in emacs and run the program with
- M-x eval-buffer
(defun solve (xs) (mapcar (lambda (ys) (apply '+ ys)) xs))
(with-temp-buffer
(insert-file-contents "input.txt") (setq content (split-string (buffer-string) "\n" t)) (setq xs (mapcar (lambda (zs) (mapcar #'string-to-number (split-string zs))) content)) (delete-other-windows) (find-file-other-window "output.txt") (erase-buffer) (insert (mapconcat (lambda (x) (format "%d" x)) (solve xs) "\n")) (save-buffer))
</lang>
Erlang
<lang erlang>-module(aplusb). -export([start/0]).
start() ->
case io:fread("","~d~d") of
eof -> ok;
{ok, [A,B]} ->
io:format("~w~n",[A+B]),
start()
end.</lang>
ERRE
<lang ERRE> PROGRAM SUM2
BEGIN
LOOP INPUT(LINE,Q$) EXIT IF Q$="" SP%=INSTR(Q$," ") PRINT(VAL(LEFT$(Q$,SP%-1))+VAL(MID$(Q$,SP%+1))) END LOOP
END PROGRAM </lang>
Euler Math Toolbox
<lang Euler Math Toolbox> >s=lineinput("Two numbers seperated by a blank");
Two numbers seperated by a blank? >4 5
>vs=strtokens(s)
4 5
>vs[1]()+vs[2]()
9
</lang>
Euphoria
<lang euphoria>include get.e
function snd(sequence s)
return s[2]
end function
integer a,b
a = snd(get(0)) b = snd(get(0))
printf(1," %d\n",a+b)</lang>
EGL
<lang EGL> package programs;
// basic program // program AplusB type BasicProgram {} function main() try arg1 string = SysLib.getCmdLineArg(1); arg2 string = SysLib.getCmdLineArg(2); int1 int = arg1; int2 int = arg2; sum int = int1 + int2; SysLib.writeStdout("sum1: " + sum); onException(exception AnyException) SysLib.writeStdout("No valid input. Provide 2 integer numbers as arguments to the program."); end end end </lang>
Excel
Take any 3 columns of any row or rows. Let's say A1,B1 and C1 are taken. In C1 type in :
<lang excel> =A1+B1 </lang>
The value of C1 will change as the values of A1 and B1 are changed
<lang>1 2 3 </lang>
F#
<lang fsharp>open System
let SumOf(str : string) =
str.Split() |> Array.sumBy(int)
[<EntryPoint>] let main argv =
Console.WriteLine(SumOf(Console.ReadLine())) 0</lang>
Factor
<lang factor>USING: math.parser splitting ;
- a+b ( -- )
readln " " split1 [ string>number ] bi@ + number>string print ;</lang>
( scratchpad ) a+b 2 2 4
FALSE
<lang false>[0[^$$'9>'0@>|~]['0-\10*+]#%]n: {read an integer} n;!n;!+.</lang>
Fantom
<lang fantom>class APlusB {
public static Void main ()
{
echo ("Enter two numbers: ")
Str input := Env.cur.in.readLine
Int sum := 0
input.split.each |n| { sum += n.toInt }
echo (sum)
}
}</lang>
FBSL
Using stdin and stdout <lang qbasic>#APPTYPE CONSOLE
DIM %a, %b SCANF("%d%d", @a, @b) PRINT a, "+", b, "=", a + b
PAUSE</lang>
Fish
<lang Fish>i:o:"-"=?v1$68*-v v >~01-0 > >i:o:" "=?v68*-$a*+
>~*i:o:"-"=?v1$68*-v
v >~01-0 > >i:o:d=?v68*-$a*+
>~*+aonao;</lang>
Forth
<lang Forth>pad dup 80 accept evaluate + .</lang>
Fortran
<lang fortran>program a_plus_b
implicit none integer :: a,b read (*, *) a, b write (*, '(i0)') a + b
end program a_plus_b</lang>
Frink
This program handles arbitrarily-large integers, or even floating-point or rational numbers or complex numbers (as long as they're not internally separated with spaces, of course, which are the delimiters for this task.) It can even handle units of measure (with no embedded spaces) such as "3.3meter 2feet" and does the right thing when summing those units. It can handle any number of arbitrary whitespace characters separating the numbers. It also works whether the input is user-interactive, or input comes from stdin or a pipe. (It will bring up a user dialog for input when run in a graphical environment.) <lang frink> sum[eval[split[%r/\s+/, input[""]]]] </lang>
FunL
<lang funl>println( sum(map(int, readLine().split(' +'))) )</lang>
Gambas
<lang gambas>Public Sub Main() Dim sInput As String = InputBox("Input 2 numbers seperated by a space", "A + B")
Print Split(sInput, " ")[0] & " + " & Split(sInput, " ")[1] & " = " & Str(Val(Split(sInput, " ")[0]) + Val(Split(sInput, " ")[1]))
End</lang> Output:
999 + 888 = 1887
Gastona
Taking A and B from command line arguments <lang gastona>#listix#
<main>
"@<p1> + @<p2> = "
=, p1 + p2
</lang> Using Graphical interface <lang gastona>#javaj#
<layout of main>
EVALAYOUT, 6, 6, 3,
, A , A
, lA , eA
, lB , eB
, bSum, eRes
- listix#
<-- bSum>
MSG, eRes data!,, @<suma>
<suma> =, eA + eB
</lang>
Gema
<lang gema><D> <D>=@add{$1;$2}</lang>
GML
<lang GML>var add, a, b; add = argument0; // get the string with the numbers to add a = real(string_copy(add, 1, string_pos(" ", add))); b = real(string_copy(add, string_pos(" ", add) + 1, string_length(add) - string_pos(" ", add))); return(a + b);</lang>
Go
<lang go>package main
import "fmt"
func main() {
var a, b int fmt.Scan(&a, &b) fmt.Println(a + b)
}</lang>
Golfscript
<lang golfscript>~+</lang>
Gosu
<lang Gosu> uses java.io.InputStreamReader uses java.util.Scanner uses java.lang.System
var scanner = new Scanner( new InputStreamReader( System.in ) ) var a = scanner.nextInt() var b = scanner.nextInt()
print( a + b ) </lang>
Groovy
<lang groovy>def abAdder = {
def reader = new Scanner(System.in) def a = reader.nextInt(); def b = reader.nextInt(); assert (-1000..1000).containsAll([a,b]) : "both numbers must be between -1000 and 1000 (inclusive)" a + b
} abAdder()</lang>
GUISS
We cannot use variables, but we can find the sum of two numbers.Here we add 3 + 2: <lang guiss>Start,Programs,Accessories,Calculator,Button:3,Button:[plus], Button:2,Button:[equals]</lang>
Haskell
<lang haskell>main = print . sum . map read . words =<< getLine</lang>
HicEst
A and B are input via edit controls with spinners limiting inputs to +-1000. <lang HicEst>DLG(Edit=A, DNum, MIn=-1000, MAx=1000, E=B, DN, MI=-1000, MA=1000) WRITE(Messagebox, Name) A, B, "Sum = ", A+B</lang>
Hy
<lang hy>(print (sum (map int (.split (input)))))</lang> Alternatively, with the "threading tail" macro: <lang hy>(->> (input) (.split) (map int) (sum) (print))</lang>
Huginn
<lang huginn>import Algorithms as algo; import Text as text;
main() {
print(
"{}\n".format(
algo.reduce(
algo.map(
text.split( input().strip(), " " ),
integer
),
@( x, y ){ x + y; }
)
);
);
}</lang>
i
<lang i>software { print(number(read(' '))+number(read('\n'))) }</lang>
Icon and Unicon
<lang icon>procedure main()
numChars := '-'++&digits
read() ? {
A := (tab(upto(numChars)), integer(tab(many(numChars))))
B := (tab(upto(numChars)), integer(tab(many(numChars))))
}
write((\A + \B) | "Bad input")
end</lang>
Idris
<lang idris>main : IO() main = do
line <- getLine print $ sum $ map cast $ words line</lang>
J
Typically, in J, you would find the sum of two numbers (let us say 2 and 3) by entering both of them on a line with a + sign between them: <lang J> 2+3 5</lang> In the following expression, 1!:1(3) reads a line from STDIN; -.LF drops the line ending character; ". converts the remaining text to a sequence of numbers which are then summed using +/. <lang J>+/". (1!:1(3))-.LF</lang> Here's a little script, called "a+b.ijs": <lang J>#!/Applications/j602/bin/jconsole echo +/". (1!:1(3))-.LF exit </lang> Here is the execution of the script: <lang bash>echo 2 3 | ./a+b.ijs 5</lang>
Java
<lang java>import java.util.*;
public class Sum2 {
public static void main(String[] args) {
Scanner in = new Scanner(System.in); // Standard input
System.out.println(in.nextInt() + in.nextInt()); // Standard output
}
}</lang> Object of class Scanner works slow enough, because of that contestants prefer to avoid its use. Often, longer solution works faster and easily scales to problems. <lang java>import java.io.*; import java.util.*;
public class SumDif {
StreamTokenizer in; PrintWriter out;
public static void main(String[] args) throws IOException {
new SumDif().run();
}
private int nextInt() throws IOException {
in.nextToken();
return (int)in.nval;
}
public void run() throws IOException {
in = new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in))); // Standard input
out = new PrintWriter(new OutputStreamWriter(System.out)); // Standard output
solve();
out.flush();
}
private void solve() throws IOException {
out.println(nextInt() + nextInt());
}
}</lang>
The following code uses a StreamTokenizer instead of a Scanner.
<lang java>import java.io.*; import java.nio.charset.Charset;
public class AplusB {
public static void main(String[] args) throws IOException {
StreamTokenizer in = new StreamTokenizer(new InputStreamReader(System.in, Charset.defaultCharset()));
in.nextToken();
int a = (int) in.nval;
in.nextToken();
int b = (int) in.nval;
try (Writer out = new OutputStreamWriter(System.out, Charset.defaultCharset())) {
out.write(Integer.toString(a + b));
}
}
} </lang>
<lang>
grammar aplusb ;
options { language = Java; }
aplusb : (WS* e1=Num WS+ e2=Num NEWLINE {System.out.println($e1.text + " + " + $e2.text + " = " + (Integer.parseInt($e1.text) + Integer.parseInt($e2.text)));})+ ; Num : '-'?('0'..'9')+ ; WS : (' ' | '\t') ; NEWLINE : WS* '\r'? '\n'
;
</lang> Produces:
>java Test 1 2 23 89 13 567 -75 6 -75 -29 ^Z 1 + 2 = 3 23 + 89 = 112 13 + 567 = 580 -75 + 6 = -69 -75 + -29 = -104
JavaScript
ES5
Client side:
<lang html4strict><html> <body>
<script type='text/javascript'> var a = window.prompt('enter A number', ); var b = window.prompt('enter B number', ); document.getElementById('input').innerHTML = a + ' ' + b;
var sum = Number(a) + Number(b); document.getElementById('output').innerHTML = sum; </script> </body> </html></lang>
Server side (with node.js):
<lang javascript>process.openStdin().on (
'data',
function (line) {
var xs = String(line).match(/^\s*(\d+)\s+(\d+)\s*/)
console.log (
xs ? Number(xs[1]) + Number(xs[2]) : 'usage: <number> <number>'
)
process.exit()
}
)</lang>
$ node io.js 2 3 5 $ node io.js x 3 usage: <integer> <integer>
ES6
Node.js in a terminal: <lang javascript>process.stdin.on("data", buffer => {
console.log(
(buffer + "").trim().split(" ").map(Number).reduce((a, v) => a + v, 0)
);
}); </lang>
$ node io.js 2 3 5
JScript Windows Script Host Version 5.8
<lang javascript>var a = WScript.StdIn.ReadLine(); var b = WScript.StdIn.ReadLine(); WSH.echo(a, " + " , b , " = " , Number(a)+Number(b)); </lang>
Julia
Run from the command line: <lang julia>
- A+B
function AB() input = sum(map(int,split(readline(STDIN)," "))) println(input) end AB()</lang>
- Output:
>julia AB.jl 1 1 2
In the next solution, an error is returned if the entry is not constituted from exactly two integers. Any number of spaces can follow an integer. <lang Julia>julia> int(readuntil(STDIN, ' ')) + int(readuntil(STDIN, '\n')) 1 2 3 </lang>
Joy
Console
<lang Joy>get get +.</lang>
File
<lang Joy>"input.txt" include "output.txt" "w" fopen get get + fput pop quit.</lang>
jq
Since the given task is simply to add two numbers, the simplest approach in jq is illustrated by the following transcript: <lang jq>$ jq -s add 3 2 5 </lang> This will work provided the numbers are neither too small nor too large. However, the above program will add **all** the numbers presented on the stream (assuming only numbers are presented). If the task were to add consecutive pairs of numbers, then the approach illustrated in the following transcript can be used, in conjunction with the jq "-s" option:<lang jq> def addpairs:
if length < 2 then empty else (.[0] + .[1]), (.[2:] | addpairs) end;
addpairs</lang> For example, here is a transcript that assumes the program is in a file named AB.jq:<lang jq> $ jq -s -f AB.jq 1 2 3 4 5 6 3 7 11</lang>
K
<lang K>
split:{(a@&~&/' y=/: a:(0,&x=y)_ x) _dv\: y}
ab:{+/0$split[0:`;" "]}
ab[]
2 3 5 </lang>
Klong
<lang K>
{(1:$(*x?0c )#x)+1:$(1+*|x?0c )_x}@.rl()
2 3 5 </lang>
Kotlin
<lang scala>// version 1.0.5-2
fun main(args: Array<String>) {
val r = Regex("""-?\d+[ ]+-?\d+""")
while(true) {
print("Enter two integers separated by space(s) or q to quit: ")
val input: String = readLine()!!.trim()
if (input == "q" || input == "Q") break
if (!input.matches(r)) {
println("Invalid input, try again")
continue
}
val index = input.lastIndexOf(' ')
val a = input.substring(0, index).trimEnd().toInt()
val b = input.substring(index + 1).toInt()
if (Math.abs(a) > 1000 || Math.abs(b) > 1000) {
println("Both numbers must be in the interval [-1000, 1000] - try again")
}
else {
println("Their sum is ${a + b}\n")
}
}
}</lang>
- Output:
Enter two integers separated by space(s) or q to quit: 2 2 Their sum is 4 Enter two integers separated by space(s) or q to quit: 3 2 Their sum is 5 Enter two integers separated by space(s) or q to quit: q
L++
<lang lisp>(main
(decl int a) (decl int b) (>> std::cin a b) (prn (+ a b)))</lang>
Lasso
<lang lb>[a + b]</lang>
Lang5
<lang lang5>read read + .
read " " split expand drop + .</lang>
Lisaac
<lang lisaac>Section Header
+ name := A_PLUS_B
Section Public
- main <- ( (IO.read_integer; IO.last_integer) +
(IO.read_integer; IO.last_integer) ).println;</lang>
Little
<lang c>void main() {
string a, b; scan(gets(stdin), "%d %d", &a, &b); puts(((int)a + (int)b));
}</lang>
LiveCode
Using Livecode Server script <lang LiveCode><?lc if isNumber($0) and isNumber($1) then
put $0 + $1
else
put $0 && $1
end if ?></lang>
A graphical version using an input dialog <lang LiveCode>on mouseUp
ask "Enter two numbers"
set itemdelimiter to space
put it into nums
if isNumber(item 1 of nums) and isNumber(item 2 of nums) then
answer item 1 of nums + item 2 of nums
else
answer item 1 of nums && item 2 of nums
end if
end mouseUp</lang>
Logo
<lang logo>show apply "sum readlist</lang>
Lua
<lang Lua>a,b = io.read("*number", "*number") print(a+b)</lang>
Kite
<lang Kite>#!/usr/bin/kite
import "System.file";
in = System.file.stdin; line = in|readline; while(not (line is null)) [
arry = line|split(" ");
result = (arry[0])|int + (arry[1])|int;
result|print;
line = in|readline;
];</lang>
- Output:
$ kite a_plus_b.kt <<EOF 5 6 EOF 11 $
M2000 Interpreter
<lang>Def Range(X%)=Abs(X%)<=1000 Do {
Input A%, B%
} Until Range(A%) And Range(B%) Print A%+B%</lang>
M4
<lang M4> define(`sumstr', `eval(patsubst(`$1',` ',`+'))')
sumstr(1 2) 3</lang>
Maple
<lang maple> convert( scanf( "%d %d" ), '`+`' ); 23 34
57</lang>
Mathematica
Interactive in a notebook <lang Mathematica>Input[] + Input[]</lang>
MATLAB / Octave
<lang MATLAB>function sumOfInputs = APlusB()
inputStream = input('Enter two numbers, separated by a space: ', 's');
numbers = str2num(inputStream); %#ok<ST2NM>
if any(numbers < -1000 | numbers > 1000)
warning('APlusB:OutOfRange', 'Some numbers are outside the range');
end
sumOfInputs = sum(numbers);
end</lang>
Maude
Built-in
<lang Maude> red 3 + 4 . </lang>
With restrictions
<lang Maude> fmod ADD is
protecting INT .
op undefined : -> Int . op _add_ : Int Int -> Int [assoc comm] .
vars A B : Int .
eq A add B = if (A < -1000 or B < -1000) or (A > 1000 or B > 1000) then undefined else A + B fi .
endfm </lang>
Mercury
<lang>:- module a_plus_b.
- - interface.
- - import_module io.
- - pred main(io::di, io::uo) is det.
- - implementation.
- - import_module int, list, string.
main(!IO) :-
io.read_line_as_string(Result, !IO),
( if
Result = ok(Line),
[AStr, BStr] = string.words(Line),
string.to_int(AStr, A), string.to_int(BStr, B)
then
io.format("%d\n", [i(A + B)], !IO)
else
true
).</lang>
Maxima
<lang>in_stream: openr("/dev/stdin"); unless (line: readline(in_stream), line=false) do (
q: map('parse_string, split(line, " ")),
print(q[1]+q[2])
);
close(in_stream); </lang>
mIRC Scripting Language
<lang mirc>alias a+b {
echo -ag $calc($1 + $2)
}</lang>
МК-61/52
С/П + С/П
ML/I
The two numbers are read from 'standard input' or its equivalent. <lang ML/I>MCSKIP "WITH" NL "" A+B "" assumes macros on input stream 1, terminal on stream 2 MCSKIP MT,<> MCINS %. MCDEF SL SPACES NL AS <MCSET T1=%A1. MCSET T2=%A2. %T1+T2. MCSET S10=0 > MCSKIP SL WITH * MCSET S1=1
- MCSET S10=2</lang>
Modula-2
<lang modula2>MODULE ab;
IMPORT InOut;
VAR A, B : INTEGER;
BEGIN
InOut.ReadInt (A); InOut.ReadInt (B); InOut.WriteInt (A + B, 8); InOut.WriteLn
END ab.</lang>
MoonScript
<lang moonscript>a,b = io.read '*number','*number' print a + b</lang>
MUMPS
<lang MUMPS>ANB
NEW A,B,T,S READ !,"Input two integers between -1000 and 1000, separated by a space: ",S SET A=$PIECE(S," ",1),B=$PIECE(S," ",2) SET T=(A>=-1000)&(A<=1000)&(B>=-1000)&(B<=1000)&(A\1=A)&(B\1=B) IF T WRITE !,(A+B) IF 'T WRITE !,"Bad input" QUIT</lang>
Neko
<lang ActionScript>/**
A+B, Rosetta Code, in Neko Tectonics: nekoc a+b.neko echo '4 5' | neko a+b.n
- /
/* load some primitives */ var regexp_new = $loader.loadprim("regexp@regexp_new", 1) var regexp_match = $loader.loadprim("regexp@regexp_match", 4) var regexp_matched = $loader.loadprim("regexp@regexp_matched", 2)
var stdin = $loader.loadprim("std@file_stdin", 0)() var file_read_char = $loader.loadprim("std@file_read_char", 1)
/* Read a line from file f into string s returning length without any newline */ var NEWLINE = 10 var readline = function(f, s) {
var len = 0
var ch
while true {
try ch = file_read_char(f) catch a break;
if ch == NEWLINE break;
if $sset(s, len, ch) == null break; else len += 1
}
return len
}
/* Trim a string of trailing NUL and spaces, returning substring */ var SPACE = 32 var trim = function(s) {
var len = $ssize(s)
var ch
while len > 0 {
ch = $sget(s, len - 1)
if ch != 0 && ch != SPACE break; else len -= 1
}
return $ssub(s, 0, len)
}
/* The A+B task */ var RECL = 132 try {
/* whitespace(s), digit(s), whitespace(s), digit(s) */
var twonums = regexp_new("^\\s*(\\d+)\\s+(\\d+)\\b")
var s = $smake(RECL)
var len = readline(stdin, s)
s = trim(s)
var valid = regexp_match(twonums, s, 0, $ssize(s))
if valid {
var first = regexp_matched(twonums, 1)
var second = regexp_matched(twonums, 2)
first = $int(first)
second = $int(second)
if first < -1000 || first > 1000 $throw("First value out of range -1000,1000")
if second < -1000 || second > 1000 $throw("Second value out of range -1000,1000")
$print($int(first) + $int(second), "\n")
} else $print("Need two numbers, separated by whitespace\n")
} catch with $print("Exception: ", with, "\n")</lang>
- Output:
prompt$ nekoc a+b.neko prompt$ echo '2 2' | neko a+b 4 prompt$ neko a+b 2 3 5
Nemerle
<lang Nemerle>using System; using System.Console; using System.Linq;
module AplusB {
Main() : void
{
WriteLine(ReadLine().Split().Select(int.Parse).Sum());
}
}</lang>
NetRexx
<lang NetRexx>/* NetRexx */
options replace format comments java symbols binary
parse ask a b . say a '+' b '=' a + b</lang>
newLISP
<lang newLISP>(println (apply + (map int (parse (read-line)))))</lang>
Nim
A+B: <lang nim>import strutils, os
echo parseInt(paramStr(1)) + parseInt(paramStr(2))</lang> Arbitrary number of arguments: <lang nim>import strutils, os var sum = 0 for i in countup(1, paramCount()):
sum = sum + parseInt(paramStr(i))
echo sum</lang>
another:
<lang nim>from strutils import parseFloat, formatFloat, ffDecimal
proc aplusb(a,b: float): float =
return a + b
proc getnumber(): float =
try:
parseFloat(readLine(stdin))
except ValueError:
echo("Please enter a number: ")
getnumber()
echo("First number please: ") let first: float = getnumber()
echo("Second number please: ") let second: float = getnumber()
echo("Result: " & formatFloat(aplusb(first, second), ffDecimal, 2))</lang>
Nit
Generic non-robust version (source: the Nit’s official repository): <lang nit>module ab
var words = gets.split(" ") if words.length != 2 then print "Expected two numbers" return end print words[0].to_i + words[1].to_i</lang>
Objeck
<lang objeck>bundle Default {
class Vander {
function : Main(args : String[]) ~ Nil {
values := IO.Console->ReadString()->Split(" ");
if(values->Size() = 2) {
(values[0]->Trim()->ToInt() + values[1]->Trim()->ToInt())->PrintLine();
};
}
}
}</lang>
Oberon-2
<lang oberon2>MODULE ab;
IMPORT In, Out;
VAR A, B : INTEGER;
BEGIN
In.Int (A); In.Int (B); Out.Int (A + B, 8); Out.Ln
END ab.</lang> Producing
12 34
46
OCaml
<lang ocaml>Scanf.scanf "%d %d" (fun a b -> Printf.printf "%d\n" (a + b))</lang>
Oforth
Works with any number of integers separated by a space.
<lang Oforth>import: mapping
System.Console accept words map( #>integer) reduce( #+ ) printcr .</lang>
Ol
Note: input data must be separated by newline ([Enter] key press).
<lang ol>; simplest (+ (read) (read))
- safe
(let ((a (read))
(b (read)))
(if (not (number? a))
(runtime-error "a is not a number! got:" a))
(if (not (number? b))
(runtime-error "b is not a number! got:" b))
(print a " + " b " = " (+ a b)))
</lang>
Onyx
<lang onyx>$Prompt {
`\nEnter two numbers between -1000 and +1000,\nseparated by a space: ' print flush
} def
$GetNumbers {
mark stdin readline pop # Reads input as a string. Pop gets rid of false. cvx eval # Convert string to integers.
} def
$CheckRange { # (n1 n2 -- bool)
dup -1000 ge exch 1000 le and
} def
$CheckInput {
counttomark 2 ne
{`You have to enter exactly two numbers.\n' print flush quit} if
2 ndup CheckRange exch CheckRange and not
{`The numbers have to be between -1000 and +1000.\n' print flush quit} if
} def
$Answer {
add cvs `The sum is ' exch cat `.\n' cat print flush
} def
Prompt GetNumbers CheckInput Answer</lang>
ooRexx
version 1
<lang oorexx>Numeric digits 1000 /*just in case the user gets ka-razy. */ Say 'enter some numbers to be summed:' parse pull y yplus=add_plus(y) sum=0 Do While y<>
Parse Var y n y If datatype(n)<>'NUM' Then Do Say 'you entered something that is not recognized to be a number:' n Exit End sum+=n End
Say yplus '=' sum/1 Exit add_plus: Parse arg list list=space(list) return translate(list,'+',' ')</lang>
- Output:
enter some numbers to be summed: 1e10+7.777+33 = 10000000040.777
version 2
extend for negative numbers <lang oorexx>Numeric digits 1000 Say 'enter some numbers to be summed:' parse pull y sum=0 yplus= Do i=1 By 1 While y<>
Parse Var y n y
If datatype(n)<>'NUM' Then Do
Say 'you entered something that is not recognized to be a number:' n
Exit
End
Select
When i=1 Then
yplus=n
When n>0 Then yplus||='+'abs(n)
Otherwise yplus||=n
End
sum+=n
End
Say yplus '=' sum/1 Exit</lang>
OpenEdge/Progress
<lang progress>DEFINE VARIABLE a AS INTEGER NO-UNDO FORMAT "->>>9". DEFINE VARIABLE b AS INTEGER NO-UNDO FORMAT "->>>9".
IF SESSION:BATCH THEN DO:
INPUT FROM "input.txt". IMPORT a b. INPUT CLOSE.
END. ELSE
UPDATE a b.
MESSAGE a + b VIEW-AS ALERT-BOX</lang>
Openscad
There is no means of run-time input in Openscad <lang openscad> a = 5 + 4; echo (a); </lang>
Oxygene
<lang oxygene> // Sum 2 integers read fron standard input // // Nigel Galloway - April 16th., 2012 // namespace aplusb;
interface
uses System.Text.RegularExpressions.*;
type
aplusb = class public class method Main; end;
implementation
class method aplusb.Main; var
gc: GroupCollection; m : Match;
begin
m := new Regex('^\s*(?<a>-?[1-9]\d{0,2}|0|-?1000)\s+(?-?[1-9]\d{0,2}|0|-?1000)\s*$').Match(Console.ReadLine());
if m.Success then
begin
gc := m.Groups;
Console.WriteLine("{0} + {1} = {2}", gc['a'].Value, gc['b'].Value, Integer.Parse(gc['a'].Value) + Integer.Parse(gc['b'].Value));
end
else Console.WriteLine("Invalid Input");
end;
end. </lang> Produces:
>aplusb 23 -99 23 + -99 = -76
Oz
<lang oz>declare
class TextFile from Open.file Open.text end
StdIn = {New TextFile init(name:stdin)}
fun {ReadInt}
{String.toInt {StdIn getS($)}}
end
in
{Show {ReadInt}+{ReadInt}}</lang>
PARI/GP
User input: <lang parigp>input()+input()</lang> File input: <lang parigp>read("file1")+read("file2")</lang>
Pascal
<lang pascal>var
a, b: integer;
begin
readln(a, b); writeln(a + b);
end.</lang> Same with input from file input.txt and output from file output.txt. <lang pascal>var
a, b: integer;
begin
reset(input, 'input.txt'); rewrite(output, 'output.txt'); readln(a, b); writeln(a + b); close(input); close(output);
end.</lang>
Perl
<lang Perl>my ($a,$b) = split(' ', scalar(<STDIN>)); print "$a $b " . ($a + $b) . "\n";</lang>
using the List::Util module
<lang Perl>say sum split /\s+/, scalar <STDIN>;</lang>
Perl 6
Short version with very little "line noise":
<lang perl6>get.words.sum.say;</lang>
Reduction operator [+], and say as a function:
<lang perl6>say [+] get.words;</lang>
Long version:
<lang perl6>my ($a, $b) = $*IN.get.split(" ");
say $a + $b;</lang>
Phix
When presented with a problem this simple, I start inventing difficulty in the simple act of accepting input (especially 2 numbers on one line)... so I ended up with three different solutions, this being the longest. The much shorter Euphoria version above also works fine. <lang Phix>-- longhand version, input is echoed, full error handling string text integer idx = 0 integer ch
procedure nextch()
idx += 1
if idx>length(text) then
idx = 0
ch = 0
else
ch = text[idx]
end if
end procedure
function getNumber() integer sign = 0 integer res = 0
while find(ch," \t\r\n") do
nextch()
end while
if idx=0 then
puts(1,"\nenter another number\n")
text = gets(0)
idx = 0
nextch()
end if
if ch='-' then
sign = 1
nextch()
end if
if idx=0 or ch<'0' or ch>'9' then
idx = 0
else
while 1 do
res = res*10+ch-'0'
nextch()
if idx=0 or ch<'0' or ch>'9' then exit end if
end while
if sign then
res = -res
end if
end if
return res
end function
procedure twoNumbers() integer a, b
text = gets(0)
idx = 0
nextch()
if idx!=0 then
a = getNumber()
if idx!=0 and a>=-1000 and a<=1000 then
b = getNumber()
if idx!=0 and b>=-1000 and b<=1000 then
printf(1," %d\n",{a+b})
return
end if
end if
end if
puts(1," some error\n")
end procedure
twoNumbers()</lang>
PHP
<lang php>fscanf(STDIN, "%d %d\n", $a, $b); //Reads 2 numbers from STDIN echo ($a + $b) . "\n";</lang> <lang php>$in = fopen("input.dat", "r"); fscanf($in, "%d %d\n", $a, $b); //Reads 2 numbers from file $in fclose($in);
$out = fopen("output.dat", "w"); fwrite($out, ($a + $b) . "\n"); fclose($out);</lang>
PicoLisp
<lang PicoLisp>(+ (read) (read)) 3 4 -> 7</lang>
Piet
The code is fairly straightforward. The individual commands are as follows:
<lang text>in(num)
in(num)
add
out(num)</lang>
Pike
<lang Pike>string line = Stdio.stdin->gets(); sscanf(line, "%d %d", int a, int b); write(a+b +"\n");</lang>
PL/I
<lang pli>get (a, b); put (a+b);</lang>
Pony
<lang pony> actor Main
let _env:Env
new create(env:Env)=>
_env=env
env.input(object iso is InputNotify
let _e:Main=this
fun ref apply(data:Array[U8] iso)=>
_e(consume data)
fun ref dispose()=>
None
end,
512)
be apply(s:Array[U8] iso)=>
let c=String.from_iso_array(consume s)
let parts:Array[String]=c.split(" ",0)
var sum:I32=0
try
for v in parts.values() do
sum=sum+match v.read_int[I32](0)?
|(let x:I32,_)=>x
end
end
end
_env.out.print(sum.string())
</lang>
PostScript
<lang postscript>(%stdin) (r) file % get stdin dup token pop % read A exch token pop % read B add =</lang>
Potion
<lang potion># The numbers are entered, piped, or redirected in via STDIN and the format is proper (i.e., "%d %d"). input = read i = 0 while (i < input length):
if (input(i) == " "):
break
.
i++
. (input slice(0, i) number + input slice(i, nil) number) print
- The numbers are manually inputted, but the format is improper (i.e., "%d\n%d\n").
(read number + read number) print</lang>
PowerShell
<lang powershell>$a,$b = -split "$input" [int]$a + [int]$b</lang> This solution does not work interactively, while the following only works interactively: <lang powershell>$a,$b = -split (Read-Host) [int]$a + [int]$b</lang>
I think this works better and doesn't require string input (following the task closer): <lang powershell>filter add {
return [int]$args[0] + [int]$args[1]
}</lang>
Can be called in one line with <lang powershell>add 2 3</lang>
Processing
Rudimentary User Interface
Click on either side to add 1 to its value. <lang Processing>int a = 0; int b = 0;
void setup() {
size(200, 200);
}
void draw() {
fill(255);
rect(0, 0, width, height);
fill(0);
line(width/2, 0, width/2, height * 3 / 4);
line(0, height * 3 / 4, width, height * 3 / 4);
text(a, width / 4, height / 4);
text(b, width * 3 / 4, height / 4);
text("Sum: " + (a + b), width / 4, height * 7 / 8);
}
void mousePressed() {
if (mouseX < width/2) {
a++;
} else {
b++;
}
}</lang>
ProDOS
With the math module: <lang ProDOS>editvar /newvar /value=a /title=Enter an integer: editvar /newvar /value=b /title=Enter another integer: editvar /newvar /value=c do add -a-,-b-=-c- printline -c- </lang> Without the math module: <lang ProDOS>editvar /newvar /value=a /title=Enter an integer: editvar /newvar /value=b /title=Enter another integer: editvar /newvar /value=c=-a-+-b- printline -c- </lang>
Prolog
<lang Prolog>plus :-
read_line_to_codes(user_input,X), atom_codes(A, X), atomic_list_concat(L, ' ', A), maplist(atom_number, L, LN), sumlist(LN, N), write(N).</lang>
output : <lang Prolog>?- plus. |: 4 5 9 true.</lang>
Pure
<lang pure>using system; printf "%d\n" (x+y) when x,y = scanf "%d %d" end;</lang>
PureBasic
Console
<lang PureBasic>x$=Input() a=Val(StringField(x$,1," ")) b=Val(StringField(x$,2," ")) PrintN(str(a+b))</lang>
File
<lang PureBasic>If ReadFile(0,"in.txt")
x$=ReadString(0) a=Val(StringField(x$,1," ")) b=Val(StringField(x$,2," ")) If OpenFile(1,"out.txt") WriteString(1,str(a+b)) CloseFile(1) EndIf CloseFile(0)
EndIf </lang>
Python
Console
In Python 2, input returns ints, while raw_input returns strings.
In Python 3, input returns strings, and raw_input does not exist.
The first two lines allow the program to be run in either Python 2 or 3. In Python 2, raw_input exists, and the lines are effectively skipped. In Python 3, calling raw_input triggers an error, so the except loop activates and assigns "raw_input" the value of Python 3's "input" function. Regardless of version, these two lines make sure that raw_input will return a string.
<lang python>try: raw_input except: raw_input = input
print(sum(map(int, raw_input().split())))</lang>
File
For Python 2.X and 3.X taking input from stdin stream which can be redirected to be file input under Unix <lang python>import sys
for line in sys.stdin:
print(sum(map(int, line.split())))</lang>
QB64
<lang QB64> DIM a AS INTEGER, b AS INTEGER DIM c AS LONG INPUT "Enter A: ", a INPUT "Enter B: ", b c = a + b PRINT "" PRINT "A + B = " + LTRIM$(STR$(c)) </lang>
R
<lang r>sum(scan("", numeric(0), 2))</lang>
Ra
<lang Ra> class Sum **Adds two given integers**
on start
args := program arguments
if args empty print to Console.error made !, "No arguments given" exit program with error code
if args.count = 1 print to Console.error made !, "Only one argument given" exit program with error code
try print integer.parse(args[0]) + integer.parse(args[1])
catch FormatException print to Console.error made !, "Arguments must be integers" exit program with error code
catch OverflowException print to Console.error made !, "Numbers too large" exit program with error code </lang>
Racket
<lang racket>
- lang racket
(+ (read) (read)) </lang>
Or, with additional error checking: <lang racket>
- lang racket
(define a (read)) (unless (number? a) (error 'a+b "number" a)) (define b (read)) (unless (number? b) (error 'a+b "number" b)) (displayln (+ a b)) </lang>
REBOL
<lang rebol>forever [x: load input print x/1 + x/2]</lang>
- Output:
1 2 3 2 2 4 3 2 5
Red
<lang Red>x: load input print x/1 + x/2</lang>
- Output:
1 2 3 2 2 4 3 2 5
Alternative implementations: <lang Red>print (first x: load input) + x/2</lang> <lang Red>print head insert load input 'add</lang> <lang Red>print load replace input " " " + "</lang>
Retro
<lang Retro>: try ( "-n ) getToken toNumber getToken toNumber + putn ;</lang> <lang Retro>try 1 2</lang>
REXX
version 1, unnormalized
The numbers can be any valid REXX number (integer, fixed point decimal, floating point (with exponential notation, ···). <lang rexx>/*REXX program obtains two numbers from the input stream (the console), shows their sum.*/ parse pull a b /*obtain two numbers from input stream.*/ say a+b /*display the sum to the terminal. */
/*stick a fork in it, we're all done. */</lang>
version 2, normalizied
If the user entered 4.00000 and wanted to add 5 to that, and expects 9,
then the output needs to be normalized before displaying the result.
Normally, REXX will keep the greatest precision in the results;
adding 4.00000 and 5 will normally yield 9.00000
Dividing by one normalizes the number. <lang rexx>/*REXX program obtains two numbers from the input stream (the console), shows their sum.*/ parse pull a b /*obtain two numbers from input stream.*/ say (a+b) / 1 /*display normalized sum to terminal. */
/*stick a fork in it, we're all done. */</lang>
version 3, extended precision
Using the numeric digits statement allows more decimal digits to be used, the default is 9. <lang rexx>/*REXX program obtains two numbers from the input stream (the console), shows their sum.*/ numeric digits 300 /*the default is nine decimal digits.*/ parse pull a b /*obtain two numbers from input stream.*/ z= (a+b) / 1 /*add and normalize sum, store it in Z.*/ say z /*display normalized sum Z to terminal.*/
/*stick a fork in it, we're all done. */</lang>
version 4, multiple numbers
This REXX version adds all the numbers entered (not just two). <lang rexx>/*REXX program obtains some numbers from the input stream (the console), shows their sum*/ numeric digits 1000 /*just in case the user gets ka-razy. */ say 'enter some numbers to be summed:' /*display a prompt message to terminal.*/ parse pull y /*obtain all numbers from input stream.*/ many= words(y) /*obtain the number of numbers entered.*/ $= 0 /*initialize the sum to zero. */
do j=1 for many /*process each of the numbers. */
$= $ + word(y, j) /*add one number to the sum. */
end /*j*/
/*stick a fork in it, we're all done. */
say 'sum of ' many " numbers = " $/1 /*display normalized sum $ to terminal.*/</lang>
version 5, multiple numbers, tongue in cheek
<lang rexx>/*REXX program obtains some numbers from the input stream (the console), shows their sum*/ numeric digits 1000 /*just in case the user gets ka-razy. */ say 'enter some numbers to be summed:' /*display a prompt message to terminal.*/ parse pull y /*obtain all numbers from input stream.*/ y=space(y) y=translate(y,'+',' ') Interpret 's='y say 'sum of ' many " numbers = " s/1 /*display normalized sum s to terminal.*/</lang>
Ring
<lang ring>give Numbers Numbers = split(Numbers) sum = 0 for x in Numbers sum += x next see sum
func Split Str for x in str if x = " " x = nl ok next return str2list(str)</lang>
Robotic
<lang robotic> input string "Input A:" set "A" to "input" input string "Input B:" set "B" to "input"
- "('A' + 'B')"
end </lang>
Although the function in the first and third line asks for a string as the input, so long as the variable isn't made to store a string, it will default to an integer instead. Inserting a string to this will return a 0.
Rockstar
Minimized: <lang Rockstar> Listen to A number Listen to B Say A number plus B </lang> Idiomatic: <lang Rockstar> Listen to my voice Listen to your thoughts Shout your thoughts with my voice </lang>
Ruby
<lang ruby>puts gets.split.sum(&:to_i)</lang>
Run BASIC
<lang runbasic>input, x$ print val(word$(x$,1)) + val(word$(x$,2))</lang>
Rust
<lang rust>use std::io;
fn main() {
let mut line = String::new();
io::stdin().read_line(&mut line).expect("reading stdin");
let mut i: i64 = 0;
for word in line.split_whitespace() {
i += word.parse::<i64>().expect("trying to interpret your input as numbers");
}
println!("{}", i);
}</lang>
or
<lang rust>use std::io;
fn main() {
let mut line = String::new();
io::stdin().read_line(&mut line).expect("reading stdin");
let sum: i64 = line.split_whitespace()
.map(|x| x.parse::<i64>().expect("Not an integer"))
.sum();
println!("{}", sum);
}</lang>
Scala
<lang scala>println(readLine().split(" ").map(_.toInt).sum)</lang>
This will work if the input is exactly as specified, with no extra whitespace. A slightly more robust version:
<lang scala>val s = new java.util.Scanner(System.in) val sum = s.nextInt() + s.nextInt() println(sum)</lang>
or
<lang scala>println(readLine().split(" ").filter(_.length>0).map(_.toInt).sum)</lang>
Scheme
<lang scheme>(display (+ (read) (read)))</lang>
sed
Sed is for string processing and has no facility for manipulating numbers as numeric values. However, being Turing complete, sed can be coerced into performing mathematics. <lang sed>: Loop
- All done
/^-*00* /s/// / -*00*$/s/// t
- Negative Check
/^\(-*\)[0-9].* \1[0-9]/!b Negative
- Create magic lookup table
s/\(.[0-9]*\) \(.[0-9]*\)/\1;987654321000009999000999009909 \2;012345678999990000999000990090/ s/ \(-\)*\(9*;\)/ \10\2/
- Decrement 1st number
s/\([^0]\)\(0*\);[^0]*\1\(.\).*\2\(9*\).* \(.*\)/\3\4 \5/
- Increment 2nd
s/\([^9]\)\(9*\);[^9]*\1\(.\).*\2\(0*\).*/\3\4/ t Loop
- Negative
- Create magic lookup table
s/\(.[0-9]*\) \(.[0-9]*\)/\1;987654321000009999000999009909 \2;987654321000009999000999009909/
- Decrement 1st number
s/\([^0]\)\(0*\);[^0]*\1\(.\).*\2\(9*\).* \(.*\)/\3\4 \5/
- Decrement 2nd
s/\([^0]\)\(0*\);[^0]*\1\(.\).*\2\(9*\).*/\3\4/ t Loop</lang>
Another method, based off of this StackExchange answer: <lang sed>#!/bin/sed -f
- Add a marker in front of each digit, for tracking tens, hundreds, etc.
s/[0-9]/<&/g
- Convert numbers to, in essence, tally marks
s/0//g; s/1/|/g; s/2/||/g; s/3/|||/g; s/4/||||/g; s/5/|||||/g s/6/||||||/g; s/7/|||||||/g; s/8/||||||||/g; s/9/|||||||||/g
- Multiply by ten for each digit from the back they were.
- tens
s/|</<||||||||||/g t tens
- We don't want the digit markers any more
s/<//g
- Negative minus negative is the negation of their absolute values.
s/^-\(|*\) *-/-\1/
- Negative plus positive equals positive plus negative, and we want the negative at the back.
s/^-\(|*\) \+\(|*\)$/\2-\1/
- Get rid of any space between the numbers
s/ //g
- A tally on each side can be canceled.
- minus
s/|-|/-/ t minus s/-$//
- Convert back to digits
- back
s/||||||||||/</g s/<\([0-9]*\)$/<0\1/g s/|||||||||/9/g; s/|||||||||/9/g; s/||||||||/8/g; s/|||||||/7/g; s/||||||/6/g; s/|||||/5/g; s/||||/4/g; s/|||/3/g; s/||/2/g; s/|/1/g; s/</|/g t back s/^$/0/</lang>
Seed7
<lang seed7>$ include "seed7_05.s7i";
const proc: main is func
local var integer: a is 0; var integer: b is 0; begin read(a); read(b); writeln(a + b); end func;</lang>
SequenceL
<lang sequencel>import <Utilities/Conversion.sl>;
main(args(2)) := stringToInt(args[1]) + stringToInt(args[2]);</lang>
- Output:
cmd:> main.exe 3 4 7 cmd:> main.exe -5 7 2 cmd:> main.exe -12 -10 -22
SETL
<lang setl>read(A, B); print(A + B);</lang>
Self
Works with positive and negative integers, and also more than two integers.
<lang self>((stdin readLine splitOn: ' ') mapBy: [|:e| e asInteger]) sum printLine.</lang>
Shiny
<lang shiny>if (io.line 'stdin').match ~(\d+)\s+(\d+)~
say "$a $b %(a+b)d"
end</lang>
Sidef
Works with both positive and negative integers. <lang ruby>say STDIN.readline.words.map{.to_i}.sum</lang>
More idiomatically: <lang ruby>say read(String).words»to_i»()«+»</lang>
Explicit summation: <lang ruby>var (a, b) = read(String).words.map{.to_i}... say a+b</lang>
Simula
<lang simula>BEGIN
WHILE NOT LASTITEM DO
BEGIN
OUTINT(ININT + ININT, 0);
OUTIMAGE;
END;
END. </lang>
SmileBASIC
<lang smilebasic>INPUT A INPUT B PRINT A+B </lang>
SNOBOL4
Simple-minded solution (literally "two somethings separated by space") <lang snobol> input break(" ") . a " " rem . b output = a + b end</lang> "Integer aware" solution: <lang snobol> nums = "0123456789" input span(nums) . a break(nums) span(nums) . b output = a + b end</lang>
Smalltalk
Most Smalltalk implementations do not have the notion of a standard input stream, since it has always been a GUI based programming environment. I've included test methods to demonstrate one way to create an input stream with two integers can be created. Opening a text file would be another. <lang smalltalk>'From Squeak3.7 of 4 September 2004 [latest update: #5989] on 8 August 2011 at 3:50:55 pm'! Object subclass: #ABTask instanceVariableNames: classVariableNames: poolDictionaries: category: 'rosettacode'!
"-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- "!
ABTask class instanceVariableNames: !
!ABTask class methodsFor: 'demo'! parseInteger: inputStream ^ Integer readFrom: inputStream skipSeparators! !
!ABTask class methodsFor: 'demo'! sum: inputStream ^ (self parseInteger: inputStream) + (self parseInteger: inputStream)! !
!ABTask class methodsFor: 'demo'! test2Plus2 ^ self sum: (ReadStream on: '2 2')! !
!ABTask class methodsFor: 'demo'! test3Plus2 ^ self sum: (ReadStream on: '3 2')! !</lang>
but all have a stream hierarchy, so the task could be restated to pass input and output as stream arguments:
<lang smalltalk>|task| task := [:inStream :outStream |
|processLine|
processLine :=
[
|a b|
a := Integer readFrom: inStream.
b := Integer readFrom: inStream.
"is validation part of the task?"
self assert:( a between:-1000 and: 1000).
self assert:( b between:-1000 and: 1000).
outStream print (a+b); cr.
].
[ inStream atEnd ] whileFalse:processLine.
].
task value: ( 'dataIn.txt' asFilename readStream) value:Transcript.</lang> or: <lang smalltalk>task value: Stdin value: Stdout.</lang>
smart BASIC
<lang qbasic>INPUT n$ PRINT VAL(LEFT$(n$,(LEN(STR$(VAL(n$))))))+VAL(RIGHT$(n$,(LEN(n$)-LEN(STR$(VAL(n$)))-1)))</lang>
NOTE: This is a horribly forced way of doing this. smart BASIC has commands to SPLIT strings. Surely someone can provide better code than what I've written here. ;@)
And someone did...
A FAR more elegant solution was provided by "Dutchman" on the smart BASIC Support Forum:
<lang qbasic>INPUT n$ SPLIT n$ TO m$,n WITH " " PRINT m$(0),m$(1),m$(0)+m$(1)</lang>
NOTE: smart BASIC will intelligently interpret the contents of a string as a numeric value if necessary. Other versions of BASIC would require the values stored in a string to be converted to numeric values before calculation.
SPAD
One of several possibilities: <lang SPAD>(1) -> integer READ()$Lisp + integer READ()$Lisp 333 444
(1) 777
Type: PositiveInteger</lang>
Domain:SExpression
SPARK
<lang Ada>-- By Jacob Sparre Andersen -- Validates with SPARK GPL 2010's Examiner/Simplifier
with SPARK_IO; --# inherit SPARK_IO;
--# main_program; procedure A_Plus_B --# global in out SPARK_IO.Inputs, SPARK_IO.Outputs; --# derives SPARK_IO.Inputs from SPARK_IO.Inputs & --# SPARK_IO.Outputs from SPARK_IO.Inputs, SPARK_IO.Outputs; is
subtype Small_Integers is Integer range -1_000 .. +1_000; A, B : Integer; A_OK, B_OK : Boolean;
begin
SPARK_IO.Get_Integer
(File => SPARK_IO.Standard_Input,
Item => A,
Width => 0,
Read => A_OK);
A_OK := A_OK and A in Small_Integers;
SPARK_IO.Get_Integer
(File => SPARK_IO.Standard_Input,
Item => B,
Width => 0,
Read => B_OK);
B_OK := B_OK and B in Small_Integers;
if A_OK and B_OK then
SPARK_IO.Put_Integer
(File => SPARK_IO.Standard_Output,
Item => A + B,
Width => 4,
Base => 10);
else
SPARK_IO.Put_Line
(File => SPARK_IO.Standard_Output,
Item => "Input data does not match specification.",
Stop => 0);
end if;
end A_Plus_B;</lang>
SPL
<lang spl>n = #.split(#.input("Input two numbers, separated by space:")," ")
- .output(n[1],"+",n[2],"=",#.val(n[1])+#.val(n[2]))</lang>
- Input:
Input two numbers, separated by space: 2 3
- Output:
2+3=5
SQL
<lang sql>select A+B</lang> Example: <lang sql>select 2+3</lang> This should produce a result set containing the value 5.
Note however that declaration of variables is outside the scope of the ANSI SQL standards, unless by variables you mean tables (which would complicate the example considerably).
SQL PL
With SQL only: <lang sql pl> values 2 + 2; values 3 + 2; select 2 + 2 from sysibm.sysdummy1; select 3 + 2 from sysibm.sysdummy1; </lang> Output:
db2 -t
db2 => values 2 + 2;
1
-----------
4
1 record(s) selected.
db2 => values 3 + 2;
1
-----------
5
1 record(s) selected.
db2 => select 2 + 2 from sysibm.sysdummy1;
1
-----------
4
1 record(s) selected.
db2 => select 3 + 2 from sysibm.sysdummy1;
1
-----------
5
1 record(s) selected.
SSEM
The SSEM has no Add instruction, so we rely on the fact that a + b = -(-a - b). <lang ssem>10100000000000100000000000000000 0. -5 to c acc = -A 01100000000001010000000000000000 1. Sub. 6 acc -= B 11100000000001100000000000000000 2. c to 7 X = acc 11100000000000100000000000000000 3. -7 to c acc = -X 00000000000001110000000000000000 4. Stop 10100100000000000000000000000000 5. 37 A 00111000000000000000000000000000 6. 28 B 00000000000000000000000000000000 7. 0 X</lang>
Standard ML
<lang sml>(*
* val split : string -> string list * splits a string at it spaces *)
val split = String.fields (fn #" " => true | _ => false)
(*
* val removeNl : string -> string * removes the occurence of "\n" in a string *)
val removeNl = String.translate (fn #"\n" => "" | c => implode [c])
(*
* val aplusb : unit -> int * reads a line and gets the sum of the numbers *)
fun aplusb () = let val input = removeNl (valOf (TextIO.inputLine TextIO.stdIn)) in foldl op+ 0 (map (fn s => valOf (Int.fromString s)) (split input)) end</lang>
- Output:
- aplusb(); 123 456 val it = 579 : int
Swift
Requires sending EOF. <lang Swift>import Foundation
let input = NSFileHandle.fileHandleWithStandardInput()
let data = input.availableData let str = NSString(data: data, encoding: NSUTF8StringEncoding)!
let nums = str.componentsSeparatedByString(" ") let a = (nums[0] as String).toInt()! let b = (nums[1] as String).toInt()!
print(" \(a + b)")</lang>
Swift 4 and no requirement to send EOF (press enter/send newline like you normally would)
<lang Swift> import Foundation
let input = FileHandle.standardInput
let data = input.availableData let str = String(data: data, encoding: .utf8)! let nums = str.split(separator: " ")
.map { String($0.unicodeScalars
.filter { CharacterSet.decimalDigits.contains($0) }) }
let a = Int(nums[0])! let b = Int(nums[1])!
print(" \(a + b)") </lang>
Tcl
<lang tcl>scan [gets stdin] "%d %d" x y puts [expr {$x + $y}]</lang> Alternatively: <lang tcl>puts [tcl::mathop::+ {*}[gets stdin]]</lang> To/from a file: <lang tcl>set in [open "input.txt"] set out [open "output.txt" w] scan [gets $in] "%d %d" x y puts $out [expr {$x + $y}] close $in close $out</lang>
TI-83 BASIC
<lang ti83b>:Prompt A,B
- Disp A+B</lang>
TI-83 Hex Assembly
Note: Comments (after the semicolons) are just for explanation -- TI-83 hex assembly does not allow comments in program source code.
<lang ti83b>PROGRAM:APLUSB
- AsmPrgm
- EFC541 ; ZeroOP1
- 217984 ; ld hl,op1+1
- 3641 ; ld (hl),'A'
- EFE34A ; RclVarSym
- CF ; rst OP1toOP2
- EFC541 ; ZeroOP1
- 217984 ; ld hl,op1+1
- 3642 ; ld (hl),'B'
- EFE34A ; RclVarSym
- F7 ; rst FPAdd
- EFBF4A ; StoAns
- C9 ; ret</lang>
Store the inputs in the 'A' and 'B' OS variables. Run it with Asm(prgmAPLUSB) and the output will be stored in the Ans OS variable.
TI-89 BASIC
<lang ti89b>:aplusb(a,b)
- a+b</lang>
TorqueScript
Since torque is not compatible with standard input, I will show the closest to that. It's a function that takes a single string input, that will contain the 2 numbers. <lang Torque>Function aPlusB(%input) {
return getWord(%input, 0) + getWord(%input, 1);
}</lang>
TUSCRIPT
<lang tuscript>$$ MODE TUSCRIPT SET input="1 2" SET input=SPLIT(input,": :") SET input=JOIN (input) SET output=SUM(input)</lang>
TXR
$ txr -p '(+ (read) (read))' 1.2 2.3 3.5
TypeScript
function add(a: number, b: number) {
return a+b;
}
UNIX Shell
<lang sh>#!/bin/sh read a b || exit echo `expr "$a" + "$b"`</lang>
Script "a+b.sh": <lang bash>#!/bin/bash read a b || exit echo $(( a + b ))</lang>
- Output:
<lang bash>echo 2 3 | ksh a+b.sh 5</lang>
C Shell
<lang csh>set line=$< set input=($line) @ sum = $input[1] + $input[2] echo $sum</lang>
Ursa
<lang>#
- a + b
- read a string containing the two ints
decl string input set input (in string console)
- determine the sum
decl int sum set sum (int (+ sum (int (split input " ")<0>))) set sum (int (+ sum (int (split input " ")<1>)))
- output the sum
out sum endl console</lang>
Ursala
Using standard input and output streams: <lang Ursala>#import std
- import int
- executable&
main = %zP+ sum:-0+ %zp*FiNCS+ sep` @L</lang> Overwriting a text file named as a command line parameter: <lang Ursala>#import std
- import int
- executable -[parameterized]-
main = ~command.files.&h; <.contents:= %zP+ sum:-0+ %zp*FiNCS+ sep` @L+ ~contents></lang>
Creating a new file named after the input file with suffix .out:
<lang Ursala>#import std
- import int
- executable -[parameterized]-
main =
~command.files.&h; ~&iNC+ file$[
contents: %zP+ sum:-0+ %zp*FiNCS+ sep` @L+ ~contents, path: ~path; ^|C\~& ~=`.-~; ^|T/~& '.out'!]</lang>
Vala
Read from stdin while program running: <lang vala>Using GLib;
int main (string[] args) {
stdout.printf ("Please enter int value for A\n");
var a = int.parse (stdin.read_line ());
stdout.printf ("Please enter int value for B\n");
var b = int.parse (stdin.read_line ());
stdout.printf ("A + B = %d\n", a + b);
return 0;
} </lang>
VBA
<lang VBA>Sub Rosetta_AB() Dim stEval As String stEval = InputBox("Enter two numbers, separated only by a space", "Rosetta Code", "2 2") MsgBox "You entered " & stEval & vbCr & vbCr & _
"VBA converted this input to " & Replace(stEval, " ", "+") & vbCr & vbCr & _ "And evaluated the result as " & Evaluate(Replace(stEval, " ", "+")), vbInformation + vbOKOnly, "XLSM"
End Sub</lang>
VBScript
<lang vb>Option Explicit Dim a, b Select Case WScript.Arguments.Count Case 0 'No arguments, prompt for them. WScript.Echo "Enter values for a and b" a = WScript.Stdin.ReadLine if Instr(a, " ") > 0 then 'If two variables were passed b = Split(a)(1) a = Split(a)(0) else WScript.Echo "Enter value for b" b = WScript.Stdin.ReadLine end if Case 1 'One argument, assume it's an input file, e.g. "in.txt" Dim FSO : Set FSO = CreateObject("Scripting.FileSystemObject") With FSO.OpenTextFile(WScript.Arguments(0), 1) a = .ReadLine b = Split(a)(1) a = Split(a)(0) .Close End With Case 2 'Two arguments, assume they are values a = WScript.Arguments(0) b = WScript.Arguments(1) End Select 'At this point, a and b are strings as entered, make them numbers a = CInt(a) b = CInt(b)
'Write the sum Wscript.Echo a + b if 1 = WScript.Arguments.Count then With FSO.CreateTextFile("out.txt") .WriteLine a + b .Close End With end if</lang>
Verilog
<lang Verilog>module TEST;
reg signed [11:0] y;
initial begin
y= sum(2, 2);
y= sum(3, 2);
y= sum(-3, 2);
end
function signed [11:0] sum;
input signed [10:0] a, b;
begin
sum= a + b;
$display("%d + %d = %d",a,b,sum);
end
endfunction
endmodule</lang>
VHDL
<lang VHDL>LIBRARY std; USE std.TEXTIO.all;
entity test is
end entity test;
architecture beh of test is
begin
process variable line_in, line_out : line; variable a,b : integer; begin readline(INPUT, line_in); read(line_in, a); read(line_in, b); write(line_out, a+b); writeline(OUTPUT, line_out); wait; -- needed to stop the execution end process;
end architecture beh;</lang>
Visual Basic .NET
<lang vbnet>Module Module1
Sub Main() Dim s() As String = Nothing
s = Console.ReadLine().Split(" "c)
Console.WriteLine(CInt(s(0)) + CInt(s(1)))
End Sub
End Module</lang>
Whitespace
<lang whitespace>
</lang>
Wren
<lang wren>import "io" for Stdin var a = Num.fromString(Stdin.readLine()) var b = Num.fromString(Stdin.readLine()) System.print(a + b) </lang>
X86 Assembly
<lang asm>section .text global _start
_print: mov ebx, 1 mov eax, 4 int 0x80 ret
_get_input: mov edx, 4 mov ebx, 0 mov eax, 3 int 0x80 ret
_start: mov edx, in_val_len mov ecx, in_val_msg call _print mov ecx, a call _get_input ;make 'a' an actual number rather than a char. sub dword [a], 0x30 mov edx, in_val_len mov ecx, in_val_msg call _print mov ecx, b call _get_input ;calc real number for 'b' sub dword [b], 0x30 mov eax, dword [a] mov ebx, dword [b] add eax, ebx ;get the character for our sum. add eax, 0x30 mov dword [sum], eax mov edx, out_val_len mov ecx, out_val_msg call _print mov [sum+1], dword 0xa mov edx, 4 mov ecx, sum call _print push 0x1 mov eax, 1 push eax int 0x80 ret
section .data in_val_msg db "Please input an integer:",0 in_val_len equ $-in_val_msg out_val_msg db "The sum of a+b is: ",0 out_val_len equ $-out_val_msg
section .bss a resd 1 b resd 1 sum resd 1</lang> This will not work on numbers over 0(from 1 to 0). This is due to the fact, numbers higher than 0(10,11, etc) are in fact strings when taken from the keyboard. A much longer conversion code is required to loop through and treat each number in the string as separate numbers. For example, The number '10' would have to be treated as a 1 and a 0.
xEec
<lang xEec>i# i# ma h#10 r o# p o$ p</lang>
XLISP
<lang xlisp>(DEFUN A-PLUS-B ()
(DISPLAY "Enter two numbers separated by a space.") (NEWLINE) (DISPLAY "> ") (DEFINE A (READ)) (DEFINE B (READ)) (+ A B))</lang>
- Output:
(A-PLUS-B) Enter two numbers separated by a space. > 2 2 4
XPL0
<lang XPL0>include c:\cxpl\codes; int A, B; [A:= IntIn(0);
B:= IntIn(0); IntOut(0, A+B); CrLf(0);
]</lang>
Yabasic
<lang Yabasic>repeat input "Enter two numbers (betwen -1000 ... +1000): " a, b until(valid(a) and valid(b)) print "\nThe sum of ", a, " and ", b, " is: ", a + b
sub valid(x) return min(x, -1000) >= -1000 and max(x, 1000) <= 1000 end sub</lang>
Yorick
<lang yorick>a = b = 0; read, a, b; write, a + b;</lang>
ZED
Source -> http://ideone.com/WLtEfe Compiled -> http://ideone.com/fMt6ST <lang zed>(A+B) comment:
- true
(+) (read) (read)
(+) one two comment:
- true
(003) "+" one two
(read) comment:
- true
(001) "read"</lang>
zkl
<lang zkl>do(2){ask("A B: ").split(" ").filter().sum().println()}</lang>
A B: 123 567 690 A B: -4 6 2
This actually works for any number of integers
ZX Spectrum Basic
<lang zxbasic>10 PRINT "Input two numbers separated by"'"space(s) " 20 INPUT LINE a$ 30 GO SUB 90 40 FOR i=1 TO LEN a$ 50 IF a$(i)=" " THEN LET a=VAL a$( TO i): LET b=VAL a$(i TO ): PRINT a;" + ";b;" = ";a+b: GO TO 70 60 NEXT i 70 STOP 80 REM LTrim operation 90 IF a$(1)=" " THEN LET a$=a$(2 TO ): GO TO 90 100 RETURN</lang>
Input two numbers separated by space(s) 3.14 2^3 3.14 + 8 = 11.14
zonnon
<lang zonnon> module ABProblem; var a,b: integer; begin read(a,b); writeln(a+b) end ABProblem. </lang>
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