“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。 rz7b%WY
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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》。 }X:r:{r
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以下是用不同语言写成的Hello World程序的几个例子: _)"
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Ada 4/vQ=t
with Ada.Text_Io; use Ada.Text_Io; bxHk0w
procedure Hello is 2`eu3vA
begin 1vd+p!n
Put_Line ("Hello, world!"); 7NqV*
end Hello; tqf-,BLh
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汇编语言 ;BvWU\!
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x86 CPU,DOS,TASM `<Nc
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MODEL SMALL .8~ x;P6
IDEAL o>%W7@Pr
STACK 100H J>v>6OC6i
u8=|{)yL
DATASEG 'z5 ;o:T
HW DB 'Hello, world!$' 2*FZ@?X@r
3=I Q
CODESEG C@W0fz
MOV AX, @data 5toNEDN
MOV DS, AX 46`{mPd{aO
MOV DX, OFFSET HW a]ey..m
MOV AH, 09H (dZ&Af
INT 21H jGPs!64f)
MOV AX, 4C00H nTlrG6
INT 21H /UAj]U
END ^jA^~h3(W
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x86 CPU,GNU/Linux,NASM oLRio.u*
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). XA%?35v~
;Enter this into "hello.asm" then type: !4fL|0
;"nasm -f elf hello.asm" YJ`>&AJ
;"ld hello.o -o hello" |Dli6KN
;"./hello" LYv2ll`XP
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section .data ;data section declaration l6O(+*6Us
msg db 'Hello World!',0AH ~C+T|
len equ $-msg ;string length #2iA-5
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section .text ;code section declaration sS|5x
global _start ;entry point (start of execution) $^F2
_start: mov edx,len ;string length y.OUn'^d4
mov ecx,msg ;string start $dVjxo
mov ebx,1 ;file handle: stdout J)f?x T*
mov eax,4 ;sys_write 0't)fnI#
int 80h ;kernel system call xRmB?kM3]5
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mov ebx,0 ;return value WX9BS$}0
mov eax,1 ;sys_exit SY.V_O$l}
int 80h ;kernel system call 5O*$#C;c
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x86 CPU,Windows,MASM32 e9nuQ\=
.386 $:/1U$
.model flat,stdcall S7]cF5N
option casemap:none *2Kte'+q
;Include 文件定义 oizoKwp%
include windows.inc DoA f,9|_
include user32.inc aQuENsB
includelib user32.lib E O^0sF<
include kernel32.inc >FO=ioNY
includelib kernel32.lib ygG9ht
;数据段 ektFk"W3A\
.data r\?*?sL
szCaption db 'A MessageBox!',0 EhoR.
szText db 'Hello,world!',0 UlR7_
;代码段 2t%)d9r32
.code Q&7Qht:ea:
start: nLQJ~("
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK .7q#{`K^=
invoke ExitProcess,NULL L;;x%>
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
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end start e%#f9i
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AWK H.e@w3+h
BEGIN { print "Hello, world!" } 1k`!w}
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BASIC G1BVI:A&S
传统版BASIC(例如GWBASIC): dBkB9nz
Z2r\aZ-d`
10 PRINT "Hello, world!" 2q>4nN
20 END X9>ujgK
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或在提示符输入: 1RLSeT
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?"Hello, world!":END lB3X1e9
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现代版BASIC(例如Quick BASIC): o3yZC z
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Print "Hello, world!" :Wln$L$
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以下的语句在Quick BASIC中同样有效: 3)sqAs(
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? "Hello,world!" -HOCxR
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BCPL 3!I8J:GZ:
GET "LIBHDR" l[gL(p"W
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LET START () BE iw%DQ }$
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WRITES ("Hello, world!*N") 6%? NNEM
$) !eW<4jYB
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Befunge AdhCC13B
"!dlrow olleH">v IkupW|}rc
, x&sF_<[
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Brainfuck M30_b8[Y_
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+++++++++++++++.>.+++.------.--------.>+.>. M9M EQK
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C IMBqy -q
#include <stdio.h> RGcT
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int main(void) XHW{EVcF
{ z-,'W`
printf("Hello, world!\n"); 'Mg%G(3
return 0; l{k
} 'lWNU
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C++ f,$FrI,
#include <iostream> H_x35|"
#ws6z`mt
int main() REa%kU
{ 79&Mc,69
std::cout << "Hello, world!" << std::endl; YO=;)RA
return 0; SU*P@?:/}
} +_+_`q>]
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C++/CLI Q)v8hNyUmA
int main() sbgRl%
{ ;qvZ *
System::Console::WriteLine("Hello, world!"); b{(:'.
} Q.nEY6B_
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C# (C Sharp) r+>9O
class HelloWorldApp 1~j.jv$
{ c$p1Sovw
public static void Main() thOCzGJ$
{ p@P[pzxI
System.Console.WriteLine("Hello, world!"); c45Mv_
} luV%_[F
} `toSU>:
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COBOL H~
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IDENTIFICATION DIVISION. -i9/1.Z
PROGRAM-ID. HELLO-WORLD. bju0l[;=
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ENVIRONMENT DIVISION. I@.qon2V
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DATA DIVISION. A1i-QG/6
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PROCEDURE DIVISION. 6~^+</?
DISPLAY "Hello, world!". 7%JXVP}A
STOP RUN. W0R6<-
1
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Common Lisp i`E]gJ$
(format t "Hello world!~%") h$lY,7
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DOS批处理 )Y)7p//
@echo off ^c+6?
echo "Hello, world!" guBOR0x`
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Eiffel &H*F
class HELLO_WORLD zm"& 8/l
${`\In_?O
creation `,TPd ~#~
make 0ro)e~_@*
feature 3fpX
make is GJ!usv u
local x<imMJ
io:BASIC_IO d+=;sJ
do i^j{l_-JE
!!io W&GDE
io.put_string("%N Hello, world!") #~(@Ka.eA0
end -- make 0\u_\%[
end -- class HELLO_WORLD WpRi+NC}ln
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Erlang IhUuL0
-module(hello). (Iu5QLE
-export([hello_world/0]). =$fxK
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hello_world() -> io:fwrite("Hello, World!\n"). \}Hk`n)Aq
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H,] D}r
Forth ;b(/PH!O
." Hello, world!" CR ZN^9w"A
0!xD+IA!8
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Fortran AlGD .K
WRITE(*,10) uI.4zbgl[
10 FORMAT('Hello, World!') 'M YqCfIK
STOP _Tev503
END }K0.*+M
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HTML =T;%R^@
<HTML> ^k~{6S,
<HEAD> >pz/wTOi
<TITLE> Hello World! </TITLE> -K+gr sb
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</HEAD> J>x)J}:;
<BODY> :N(L7&<
<p>Hello World!</p> 61CNEzQ
</BODY> HnZrRHT0
</HTML> {{:MJ\_"h_
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INTERCAL @zSoPDYv,
PLEASE DO ,1 <- #13 H`m|R
DO ,1 SUB #1 <- #238 dc"Vc 3)
DO ,1 SUB #2 <- #112 Ywlym\
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DO ,1 SUB #3 <- #112 =v1s@5;~
DO ,1 SUB #4 <- #0 o
KX!{
DO ,1 SUB #5 <- #64 wN"irXG
DO ,1 SUB #6 <- #238 K@%. T#
DO ,1 SUB #7 <- #26 6<FJ`l]U9
DO ,1 SUB #8 <- #248 E9QNx62
DO ,1 SUB #9 <- #168 7vgz=-
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DO ,1 SUB #10 <- #24 aZ#c_Q#gZ
DO ,1 SUB #11 <- #16 =OTwP
DO ,1 SUB #12 <- #158 }4\>q$8'
DO ,1 SUB #13 <- #52 X=_N7!
PLEASE READ OUT ,1 ;\(wJ{u?Y
PLEASE GIVE UP \Ui8Sgeei
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j =[Td
Java g7#_a6
public class Hello
,!PNfJA2
{ dLG5yx\js
public static void main(String[] args) %]RzC`NZ
{ rQ.j$U
System.out.println("Hello, world!"); O zY&^:>
} ytr~} M%
} <