“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。 u9[w~U#
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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》。 ,_7tRkn
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以下是用不同语言写成的Hello World程序的几个例子: U#^:f7-$.
Ada hgMnO J
with Ada.Text_Io; use Ada.Text_Io; .<|4PG
procedure Hello is Y$DgL
h
begin *1 eTf
Put_Line ("Hello, world!"); '3kL=(
end Hello; aABE= 9Y
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汇编语言 x[,wJzp\6
M<me\s)
x86 CPU,DOS,TASM 0.,&B5)
MODEL SMALL M}RFFg
IDEAL kv FOk
STACK 100H 7G #e~,M5
'}[L sU
DATASEG c^/?VmCQ}
HW DB 'Hello, world!$' nV6g]#~@
g960;waz3
CODESEG ri_6wbPp
MOV AX, @data I<o4 l[--
MOV DS, AX ~+NFWNgN
MOV DX, OFFSET HW 'jO-e^qT
MOV AH, 09H H@bmLq
INT 21H [/`Hz]R
MOV AX, 4C00H !wufoK
INT 21H 7=[O6<+o
END <EE+
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x86 CPU,GNU/Linux,NASM ,'0oj$~S:
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). tfU3 6PR
;Enter this into "hello.asm" then type: /3HWP`<x
;"nasm -f elf hello.asm" [T&y5"@
;"ld hello.o -o hello" UyfIAC$S
;"./hello" ~\(>m=|C:H
?^A:~" ~
section .data ;data section declaration ,lG wW8$R
msg db 'Hello World!',0AH ?;kc%Rz
len equ $-msg ;string length =kkA
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section .text ;code section declaration #~qp8
w
global _start ;entry point (start of execution) U@ QU8
_start: mov edx,len ;string length 4BL,/(W]
x
mov ecx,msg ;string start BY2txLLB
mov ebx,1 ;file handle: stdout ?;QKe0I^
mov eax,4 ;sys_write FbT&w4Um=
int 80h ;kernel system call =-&iF
wAwH8x LU
mov ebx,0 ;return value u>Kvub
mov eax,1 ;sys_exit NjMLq|X
int 80h ;kernel system call ap_+C~%+
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x86 CPU,Windows,MASM32 PH=8'GN
.386 `6F8Kqltr
.model flat,stdcall \)
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option casemap:none dfd%A"
I
;Include 文件定义 .-*nD8b
include windows.inc O&RHCR-\
include user32.inc @WE$%dr
includelib user32.lib s8O+&^(U
include kernel32.inc /{}
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includelib kernel32.lib jpS#'h
;数据段 fxa^SV
.data gVWLY;c 3}
szCaption db 'A MessageBox!',0 tHo/uW_~I
szText db 'Hello,world!',0 U7'oI;C$e
;代码段 )[Cm*Xxa$
.code _!vbX
mb
start: %'<
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invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Nd)o1{I
invoke ExitProcess,NULL 9_dsiM7CT
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >b${rgCvQ
end start "61n?Z#,M[
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AWK o8"xoXK5xf
BEGIN { print "Hello, world!" } Q:=/d$*xd
0\;a:E.c
zYJxoC{
BASIC *mtv[
传统版BASIC(例如GWBASIC): 4h(Hy&1C
(q7mzZY
10 PRINT "Hello, world!" 1(a\$Di
20 END yh!vl&8M
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或在提示符输入: MQu6Tm H
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?"Hello, world!":END 1j(,VW
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现代版BASIC(例如Quick BASIC): YO61 pZY
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Print "Hello, world!" p:))ne:7
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以下的语句在Quick BASIC中同样有效: o~ed0>D-LS
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? "Hello,world!" XjNu|H/
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BCPL i&KODhMpP
GET "LIBHDR" !8].Z"5J
=%`"
LET START () BE zKr(Gt8
$( [x,&Gwa
WRITES ("Hello, world!*N") K<(RVh
$) [OSUARm
v
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4YC`dpO'
Befunge ?0X.Ith^.
"!dlrow olleH">v
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, kzu=-@s
^_@ )2S\:&x
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V"XN(Fd^
Brainfuck ,8seoX^
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ai RNd~\
+++++++++++++++.>.+++.------.--------.>+.>. ~r3g~MCHS
E%N]t} }[
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C `1gsrHi4N
#include <stdio.h> 4j5 "{
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int main(void) 2_C.-;!
{ 7_,X9^z
printf("Hello, world!\n"); crQuoOl7
return 0; eNX-2S
} hv6>3gbr
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C++ S6
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#include <iostream> =*I9qjla[?
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int main() 0Qz
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{ QG.FW;/L,
std::cout << "Hello, world!" << std::endl; HO>uS>+
return 0; !*;)]j
} AF
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H{8\<E:V+}
C++/CLI I5mS!m/X
int main() -oj@ c
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{ ;_!;D#:
System::Console::WriteLine("Hello, world!"); $si2H8
} ?(z3/"g]
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C# (C Sharp) P<1zXs.H
class HelloWorldApp F`l1I=;
{ Nf1l{N
public static void Main() VQyDd~Za
{ uB
BE!w_
System.Console.WriteLine("Hello, world!"); ZyG528O22
} wC19
} 3c)LBM
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COBOL chy7hPxC;
IDENTIFICATION DIVISION. 0(n/hJ
PROGRAM-ID. HELLO-WORLD. btOC\bUMfD
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ENVIRONMENT DIVISION. ZHT.+X:_
xAI<<[-
DATA DIVISION. <}ev Ow2
/T?['#:r-)
PROCEDURE DIVISION. hikun2
DISPLAY "Hello, world!". ji "*=i
STOP RUN. OP@PB|
*m2:iChY
{r"HR%*u
Common Lisp Cpl\}Qn
(format t "Hello world!~%") lH[N*9G(
rfk';ph
QL3%L8
DOS批处理 #/aWGx_
@echo off j JW0a\0
echo "Hello, world!" x|Dj
|cH\w"DcXw
TSOt$7-
Eiffel p8Pvctc
class HELLO_WORLD ?@ O[$9y
wXP1tM8T
creation cla4%|kq3Y
make KF.?b]
feature $ysC)5q.
make is ;fuy}q8@7
local /)|*Vzu
io:BASIC_IO GB0] |z5
do [mhY_Hmz]
!!io oD.f/hi0|
io.put_string("%N Hello, world!") Fw|5A"9'a'
end -- make iS"rMgq
end -- class HELLO_WORLD x`$4
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Erlang Tsa&R:SE
-module(hello). 9s}--_k?F2
-export([hello_world/0]). 5)}xqE"x
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hello_world() -> io:fwrite("Hello, World!\n"). ?wmr~j
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_vad>-=D*U
Forth P/27+5(|
." Hello, world!" CR !=a8^CV
9%4rO\q
kWWb<WRW:
Fortran hI"I#(*jA%
WRITE(*,10) s3q65%D
10 FORMAT('Hello, World!') _rSnp
STOP
@521zi
END
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HTML uvT]MgT
<HTML> `jP6;i
<HEAD> DJeG
<TITLE> Hello World! </TITLE> L./UgeZ
</HEAD> &cZD{Z
<BODY> ]R0^
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<p>Hello World!</p> f F?=W
</BODY> ifuVV Fov
</HTML> 8Y:bvs.j
)=~1m85+5B
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H 0%vXPlfnY
Tmq:,.^}
BONM:(1
INTERCAL &0M^UvO
PLEASE DO ,1 <- #13 98x(2fCvF(
DO ,1 SUB #1 <- #238 WFtxEIrl3j
DO ,1 SUB #2 <- #112 $AoN,B>
DO ,1 SUB #3 <- #112 =\tg$
DO ,1 SUB #4 <- #0 pmfyvkLS
DO ,1 SUB #5 <- #64 C0'Tua'
DO ,1 SUB #6 <- #238 m@OgT<E]_
DO ,1 SUB #7 <- #26 c" yf>0
DO ,1 SUB #8 <- #248 Dk:Zeo]+my
DO ,1 SUB #9 <- #168 F`'e/
DO ,1 SUB #10 <- #24 B6,"S5@
DO ,1 SUB #11 <- #16 9v^MZ^Y{
DO ,1 SUB #12 <- #158 8%Pjx7'<
DO ,1 SUB #13 <- #52 zL1H[}[z+
PLEASE READ OUT ,1 2OEOb,`
PLEASE GIVE UP #qHo+M$"
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Java o <sX6a9e
public class Hello lepgmQ|oY
{ R(3V !ph
public static void main(String[] args) K5b8lc
{ X=-pNwO
System.out.println("Hello, world!"); |Zz3X
} .I[uXd
} 7x`uGmp1
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H=EvT'g
JSP pkhZW8O
<% Aqq%HgY:t
out.print("Hello, world!"); \S3C"P%w
%> /8lGP!z
8xlj:5;(w
0/;T\9
MIXAL .hnGHX
TERM EQU 19 the MIX console device number 8\/E/o3
ORIG 1000 start address ^KmyB6Yg
START OUT MSG(TERM) output data at address MSG BT>8
HLT halt execution @r'8<6hVO
MSG ALF "MIXAL" gZ:)l@ Wu
ALF " HELL" .BuY[,I+
ALF "O WOR" WC0@g5;1[
ALF "LD " v$lP?\P;}X
END START end of the program (V}DPA
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Nuva 19h8p>Sx0
<..直接输出..> F(:+[$)
Hello, world! `
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<..或者..> S-g`rTx
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<. H;%a1
// 不带换行 t: r
? "Hello, world!" <5G*#0gw
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// 或者 -7>vh|3
jmz, 1[
// 带换行 R2-OT5Ej
?? 'Hello, world!' =2#
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.> U5%EQc-"P
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PKty'}KF
OCaml 3@_je)s
let main () = VWaI!bK
print_endline "Hello world!";; UII R$,XB
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XQ.JzzY$
Pascal (F
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program Hello; %
=br-c
begin
&CG3_s<2
writeln('Hello, world!'); \@3i=!
end. B/&axm%0
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gs7H9%j{U
Perl vH9/}w2
#!/usr/local/bin/perl Lr V)}1&5
print "Hello, world!\n"; [-=PK\ B
Rq<T2}K
iO(9#rV
PHP Atzp\oO
<?php JIQS'r
print("Hello, world!"); FD,M.kbg
?> P] ouLjyq
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Pike 5JBenTt
#!/usr/local/bin/pike J#!:Z8b
int main() QB7E:g&