“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。 m\xE8D(,
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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》。 )mMHwLDwH
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以下是用不同语言写成的Hello World程序的几个例子: .ahYjn
Ada L|[0&u!
with Ada.Text_Io; use Ada.Text_Io; +gQoYlso
procedure Hello is %rZJ#p[e)=
begin l~V^
Put_Line ("Hello, world!"); F2$Z4%x#
end Hello; }^
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汇编语言 Lg[_9`\
Dk XB
x86 CPU,DOS,TASM wx|eO[14
MODEL SMALL b:uMON,H
IDEAL
_A %8oYS
STACK 100H L0HkmaH
N\OeWjA F
DATASEG &\, ZtaB
HW DB 'Hello, world!$' }+8w
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CODESEG P9aGDma
MOV AX, @data Pe_iA_
MOV DS, AX A<zSh}eh6
MOV DX, OFFSET HW =c, m)\u/8
MOV AH, 09H |tU4(hC
INT 21H J`8bh~7
MOV AX, 4C00H 8UyYN$7V
INT 21H LL1HDG>l
END T>ds<MaLP
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x86 CPU,GNU/Linux,NASM Htf|VpzMb
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). j7|r^
;Enter this into "hello.asm" then type: ;nbUbRb
;"nasm -f elf hello.asm" yF}l.>7D
;"ld hello.o -o hello" BtN@P23>k.
;"./hello" )wROPA\uA
> ^b6\
section .data ;data section declaration OBCRZ
msg db 'Hello World!',0AH 4M&6q(389
len equ $-msg ;string length M"eiKX
ytX XZ`
section .text ;code section declaration `
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global _start ;entry point (start of execution) C=6 Vd
_start: mov edx,len ;string length [p+6HF
mov ecx,msg ;string start O)qedy*&
mov ebx,1 ;file handle: stdout p9[J9D3~
mov eax,4 ;sys_write > T,^n
{_v
int 80h ;kernel system call \?_eQKiZ3
K 5SHt'P
mov ebx,0 ;return value d&x1uso%L
mov eax,1 ;sys_exit 5};Nv{km^2
int 80h ;kernel system call %hzl3>().
x7=5 ;gf/X
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x86 CPU,Windows,MASM32 Ub8|x]ix
.386 DV(^h$1_
.model flat,stdcall 0#
D4;v
option casemap:none p<\yp<g
;Include 文件定义 `4&
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include windows.inc (0Xgv3wd
include user32.inc D<zgs2Ex
includelib user32.lib 3sf+u oV
include kernel32.inc >900O4
includelib kernel32.lib IGj%)_W
;数据段 P%v7(bqL4+
.data e{~s\G8g
szCaption db 'A MessageBox!',0 VQ/<MY C
szText db 'Hello,world!',0 |.x |BJ
;代码段 ;=IGl:
.code zice0({iJ
start: fD#VI
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK C~.7m-YW
invoke ExitProcess,NULL W[]N.d7G
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 5sD\4 g)HK
end start _N 5$>2
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AWK #TLqo(/
BEGIN { print "Hello, world!" } FfnW
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BASIC w1-/U+0o
传统版BASIC(例如GWBASIC): -,t2D/xK
Q
Fv"!Ql
10 PRINT "Hello, world!" }%B^Vl%ZZ
20 END ~G!>2 +L
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或在提示符输入: D=U"L-rRs
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?"Hello, world!":END 5+<<:5_6l
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现代版BASIC(例如Quick BASIC): XY]|OZ7(
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Print "Hello, world!" 0s"g%gq|
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以下的语句在Quick BASIC中同样有效: >z*2Og#1
ad). X:Qs
? "Hello,world!" >qj Q;z[
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`2S G{5o;
BCPL ALqP;/
GET "LIBHDR" /F;b<kIy8
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LET START () BE '"{ IV
$( _C3l2v'I$
WRITES ("Hello, world!*N") __\Tv>Y
$) \e%H5Wx
\vVGfG?6
zmH 8#
Befunge kK]JN
"!dlrow olleH">v ;6g &_6
, <QGf9{m
^_@ Omkl|l9
w:l/B
'%]Y
&BnK[Q8X
Brainfuck F.)b`:g
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< x4jn45]x@
+++++++++++++++.>.+++.------.--------.>+.>. #F\}PCBe'
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C &CCp@" +
#include <stdio.h> (B@:0}>
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int main(void) JTw\5j
{ -EV_=a8[y
printf("Hello, world!\n"); \hpD
return 0;
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} =p 9d4smbn
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C++ 0*S2_&Q)
#include <iostream> Pa PQ|Pwz
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int main() e;:~@cB,c
{ P+!j[X^
std::cout << "Hello, world!" << std::endl; &K@2kq,
return 0; DN)Ehd.
} &?\ h[3
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C++/CLI @[M5$,"
int main() &]gw[
`
{ Sr1xG%;|/
System::Console::WriteLine("Hello, world!"); (;2J}XQvO~
} {64od0:T
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C# (C Sharp) \M>}-j`v
class HelloWorldApp 3-4' x2
{ o:u *E
public static void Main() ^v.~FFK
{ X(F2 5
System.Console.WriteLine("Hello, world!"); `RUOZ@r
} J_A+)_
} bV_@!KL$
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h~rSM#7m
COBOL ydOJ^Yty
IDENTIFICATION DIVISION. FBpf_=(_1
PROGRAM-ID. HELLO-WORLD. Nq|b$S [4
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ENVIRONMENT DIVISION. f8u m.Xnp6
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DATA DIVISION. )h-Qi#{
#% PnZ
/
PROCEDURE DIVISION. V=}AFGC85
DISPLAY "Hello, world!". cx?t C#t
STOP RUN. +~lZ]a7k
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Common Lisp IHCEuK
(format t "Hello world!~%") t><AaYij_
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DOS批处理 yD|He*$S
@echo off q~9Y&>D
echo "Hello, world!" y'ULhDgq^B
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{?c`0C
Eiffel qOO2@c
class HELLO_WORLD _]W
{)=ap
dx{ZG'@aH
creation HY[eo/nM1d
make S<"T:Y&
feature _h1n]@
d5
make is KTX;x2r
local C.M]~"e
io:BASIC_IO Y <;A989D
do 8w &