“Hello, World!”程序是一个只在计算机屏幕上打印出“Hello, World!”(英语,意为“世界,你好!”)字串的计算机程序。该程序通常是计算机程序设计语言的初学者所要学习编写的第一个程序。它还可以用来确定该语言的编译器、程序开发环境以及运行环境已经正确安装。 ALO/{:l(
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 Dt7z<1-)l
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以下是用不同语言写成的Hello World程序的几个例子: SCMvq?9
Ada %q;y74
with Ada.Text_Io; use Ada.Text_Io; V(LfFO{^>?
procedure Hello is ZR|s]'
begin u^]Gc p
Put_Line ("Hello, world!"); W]bytsl
end Hello; AEWrrE
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汇编语言 <Tbl|9
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x86 CPU,DOS,TASM L$!2<eK
MODEL SMALL L">jSZW[[
IDEAL jJvd!,=)
STACK 100H D_ej%QtB@
)`Qr=DIsW
DATASEG /GJL&RMx
HW DB 'Hello, world!$' `\ IaeMvo
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CODESEG doX`NbA
MOV AX, @data C-,#t5eir
MOV DS, AX tp!eF"v=
MOV DX, OFFSET HW Q
(gA:aQ
MOV AH, 09H (NfB+Ue}
INT 21H g co;8e_
MOV AX, 4C00H "9hD4R
INT 21H `e7vSp
END fn7?g
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x86 CPU,GNU/Linux,NASM #^|2PFh5
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 8~.8"gQ
;Enter this into "hello.asm" then type: pV:44
;"nasm -f elf hello.asm" vF@|cTRR)
;"ld hello.o -o hello" 9Ou}8a?m"
;"./hello" YFj#{C.
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section .data ;data section declaration >XuPg(Ow
msg db 'Hello World!',0AH }9z$72;Qdq
len equ $-msg ;string length u9c^YC BM
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section .text ;code section declaration HKOSS-`5
global _start ;entry point (start of execution) 2t?>0)*m
_start: mov edx,len ;string length 9-1'jNV
mov ecx,msg ;string start *h5L1Eq
mov ebx,1 ;file handle: stdout ;8e}X6YU
mov eax,4 ;sys_write e_rEu'[av
int 80h ;kernel system call /yUKUXi
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mov ebx,0 ;return value &:g1*+
mov eax,1 ;sys_exit l;aO"_E1m
int 80h ;kernel system call )N3/;U;
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x86 CPU,Windows,MASM32 i"DyXIrk2
.386 td$RDtW[3
.model flat,stdcall C\{hN
option casemap:none _|MK0'+f
;Include 文件定义 E2.!|u2
include windows.inc <5FGL96
include user32.inc CL(D&8v8~
includelib user32.lib ||7x51-yj
include kernel32.inc mB
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includelib kernel32.lib mL;oR4{
;数据段 -Fop<q\b
.data o:as}7/^
szCaption db 'A MessageBox!',0 mmNn,>AO!
szText db 'Hello,world!',0 u-.nR}DM_
;代码段 ].QzOV'
.code `!ja0Sq]U
start: _IxYnm`pc
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK !@T~m1L
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invoke ExitProcess,NULL mpIR: Im
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> mv$gL
end start rJ6N'vw>
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AWK Ck/w:i@>?
BEGIN { print "Hello, world!" } 4VsttT
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BASIC k%N$eO$
传统版BASIC(例如GWBASIC): *J4\KU
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10 PRINT "Hello, world!" 1^WkW\9kO
20 END LiGECqWBa'
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或在提示符输入: YXU2UIY<~
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?"Hello, world!":END ] J|#WtS
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现代版BASIC(例如Quick BASIC): /kO%aN
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Print "Hello, world!" tjne[p
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以下的语句在Quick BASIC中同样有效: "%rU1/@#
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? "Hello,world!" ~qA\u5sB9@
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BCPL 9!Fg1h=
GET "LIBHDR" I "R<XX
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LET START () BE #%z@yg
$( 7$"5qJ{ s
WRITES ("Hello, world!*N") #Qu|9Q[QH
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Befunge ]0}NF
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Brainfuck B/JMH 1r
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< MBol_#H
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C q-+_Y `_\
#include <stdio.h> j4(f1
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int main(void) _Vt
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{ 0A75)T=lQ
printf("Hello, world!\n"); Bthp_cSmLs
return 0; ? y[i6yN9
} 5J6~]J
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C++ M(Yt9}Z%Y
#include <iostream> vH"^a/95|
nc#} \
int main() M&rbXi.
{ lBG"COu
std::cout << "Hello, world!" << std::endl; Yjx4H
return 0; xl(R|D))
} bW^{I,b<F
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^
C++/CLI ;xu&%n[6@
int main() *i,A(f'e4X
{ OlsD
System::Console::WriteLine("Hello, world!"); CEI.*Iywu
} MeO2 cy!5q
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C# (C Sharp) h,i=Y+1
class HelloWorldApp 2)|G%f_lS
{ Okd7ua-f
public static void Main() @u-CR8^
{ gt(!I^LHYc
System.Console.WriteLine("Hello, world!"); '=ydU+X
} .fNLhyd
} U~8, N[
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COBOL *HQ>tvUh
IDENTIFICATION DIVISION. zi+NQOhR
PROGRAM-ID. HELLO-WORLD. edfb7prfTl
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ENVIRONMENT DIVISION. 7hKfxw-X@
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DATA DIVISION. }Y3*X:i7
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PROCEDURE DIVISION. `t]8 [P5
DISPLAY "Hello, world!". !=v d:,
STOP RUN. 7@ !3.u1B
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Common Lisp
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(format t "Hello world!~%") zIc_'Z,b
Ez Xi*/
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DOS批处理 7n'Ww=ttI
@echo off %u*HNo
echo "Hello, world!" G~zP&9N|
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@}o 9
Vx=tP.BO]
Eiffel qfgw^2aUa
class HELLO_WORLD n,b6|Y0
fa(- &;q
creation E*#5OT
make pT<I!,~
feature -)!;45
make is :eR\0cn
local eY'RDQa
io:BASIC_IO .2*h!d)E
do 7_ 5-gtD
!!io ^J&}C
io.put_string("%N Hello, world!") Ev1gzHd!i
end -- make Zy^ wS1io
end -- class HELLO_WORLD m/aA
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Erlang oSkvTK$&i
-module(hello). 1 o\COnt
-export([hello_world/0]). ~4`3p=$
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hello_world() -> io:fwrite("Hello, World!\n").
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Forth -;&-b >b
." Hello, world!" CR _5v]69C#
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;b0;66C8|
Fortran O+ J0X*&x
WRITE(*,10) Q^Q6|
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10 FORMAT('Hello, World!') (*V:{_r
STOP H:,Hr_;nC
END FLaj|Z~#)
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HTML OBnvY2)Ri
<HTML> uB+:sX-L
<HEAD> \-{2E
<TITLE> Hello World! </TITLE> ]?0]K!7Ea
</HEAD> n<DZb`/uHZ
<BODY> @6{F4
<p>Hello World!</p> eZmwF@
</BODY> ;^ YpQP
</HTML> RtF!(gd
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INTERCAL muIJeQ.C
PLEASE DO ,1 <- #13 *:Y9&s^6j
DO ,1 SUB #1 <- #238 'LG
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DO ,1 SUB #2 <- #112 ;!#IRR
DO ,1 SUB #3 <- #112 rh6 e
DO ,1 SUB #4 <- #0 X6n8Bi9Ik
DO ,1 SUB #5 <- #64 L#`X;:
DO ,1 SUB #6 <- #238 C@@PLsMg
DO ,1 SUB #7 <- #26 D1Q]Z63,
DO ,1 SUB #8 <- #248 \r-v]]_<d
DO ,1 SUB #9 <- #168 :<,tGYg/!
DO ,1 SUB #10 <- #24 .!_^<