“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。 "*W# z
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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》。 }#g+~9UK
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以下是用不同语言写成的Hello World程序的几个例子: :2C
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Ada ,\aLv
with Ada.Text_Io; use Ada.Text_Io; eQn[
procedure Hello is ?cKTeGrS
begin ,IE.8h)H
Put_Line ("Hello, world!"); WpnP^gmX
end Hello; 0G33hIOS
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汇编语言 KT >Y^
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x86 CPU,DOS,TASM %^nNt:N0
MODEL SMALL \+l_H4\`K
IDEAL iDhC_F|
STACK 100H DQc\[Gq&
LXhR"PWZM\
DATASEG `ah|BV
HW DB 'Hello, world!$' "zCT S
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CODESEG U[8F{LX
MOV AX, @data ^&8hhxCPu|
MOV DS, AX {~s\a2YH
MOV DX, OFFSET HW I;eoy,
MOV AH, 09H eO*s,*
INT 21H u^CL }t*
MOV AX, 4C00H o90g;Vog
INT 21H UX<-jY#'V
END EBz4k)@m
EN":}!E:
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x86 CPU,GNU/Linux,NASM p4UEhT
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ~UNha/nt
;Enter this into "hello.asm" then type: l(}L-:@A
;"nasm -f elf hello.asm" UL>2gl4s/
;"ld hello.o -o hello" ~/z%yg
;"./hello" ~w|h;*Bj
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section .data ;data section declaration Q.h.d))
msg db 'Hello World!',0AH :l1-s]
len equ $-msg ;string length mU?~s7
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section .text ;code section declaration 7DoU7I\u
global _start ;entry point (start of execution) |0}7/^
_start: mov edx,len ;string length WVOj;c
mov ecx,msg ;string start %iEdU V\$
mov ebx,1 ;file handle: stdout NqNU:_}
mov eax,4 ;sys_write ~1twGG_;
int 80h ;kernel system call }HmkTk
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mov ebx,0 ;return value xa<KF
mov eax,1 ;sys_exit bj6Yz,g F
int 80h ;kernel system call }Bsh!3D<.
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x86 CPU,Windows,MASM32 YZSQOLN{
.386 Ldv,(ZV,<
.model flat,stdcall o$+R
option casemap:none -1v9
;Include 文件定义 &ni#(
include windows.inc 6DK).|@$r
include user32.inc UntFkoO
includelib user32.lib {Q_GJ
include kernel32.inc a7F_{Mm
includelib kernel32.lib $;Iz7:#jN
;数据段 Jvsy
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.data z>,M@@
szCaption db 'A MessageBox!',0
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szText db 'Hello,world!',0 Y&U-d{"
;代码段 Haekr*1%
.code ~_ZK93o(
start: ge6S_"
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ?<
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invoke ExitProcess,NULL ]sL.+.P
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Y;huTZ
end start i$@xb_
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AWK DrV[1Z
BEGIN { print "Hello, world!" } S#B%[3@
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BASIC -s`Wd4AP
传统版BASIC(例如GWBASIC): a3\~AO H%
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10 PRINT "Hello, world!" !&g_hmnIF
20 END 3Wbd=^hRvq
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或在提示符输入: 3%1wQXr0
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?"Hello, world!":END 8~R.iqLoX
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现代版BASIC(例如Quick BASIC): *<
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Print "Hello, world!" GGHeC/4
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以下的语句在Quick BASIC中同样有效: WixEnsJ
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? "Hello,world!" It/'R-H
%K\B)HR
J]S6%omp>
BCPL #]Do_Z
GET "LIBHDR" ;cL+=!
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LET START () BE /:\27n
$( r_bG+iw7p
WRITES ("Hello, world!*N") 7}c[GC)F
$) %O[1yZh
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m\
qR myO
Befunge i6;rh-M?.
"!dlrow olleH">v /K+;HAUTn
, XCn;<$3w
^_@ Zcc7
7dRA
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trLxg H_Y
Brainfuck }VH2G94Ll
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< w+\RSqz/
+++++++++++++++.>.+++.------.--------.>+.>. R[vX+d!7
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C x<d ew
#include <stdio.h> %md9ou`
% 1<@p%y/
int main(void) j6 _w2
{ rg%m
printf("Hello, world!\n"); <X97W\
return 0; +@@( C9
} 5':j=KQE_
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C++ 1_n5:
#include <iostream> 6H|T )
diw5h};W
int main() GL&rT&
{ p1ER<_fp
std::cout << "Hello, world!" << std::endl; o3OJI_
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return 0; "KY]2v.
} bG)6p05Oa
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C++/CLI &#]||T-
int main() 34vH+,!u
{ -r{]9v2j
System::Console::WriteLine("Hello, world!"); lWU? R
} &G+:t)|S
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C# (C Sharp) ~^eC?F(
class HelloWorldApp fhQ N;7
{ -]MZP:s
public static void Main() O<0-`=W,a
{ 2FTJxSC
System.Console.WriteLine("Hello, world!"); ?~~,?Uxw!
} gO!:WD
} *wz6 2p
#!M;4~Sfx
HG})VPBa
COBOL 9'\*Ip^
IDENTIFICATION DIVISION. S L%lY
PROGRAM-ID. HELLO-WORLD. I [v~nY~l`
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ENVIRONMENT DIVISION. =ThacZHb8
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DATA DIVISION. mINir-
Ob7F39):N
PROCEDURE DIVISION. 7ZpU -':
DISPLAY "Hello, world!". |Ns[{/
STOP RUN. ;z^C\=om
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Common Lisp W6uz
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(format t "Hello world!~%") ;(9q, )
kA<58,!
A!!W\Jt
DOS批处理 u+vUv~4A6
@echo off rM(2RI4O`0
echo "Hello, world!" 1'[_J
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v`pIovn
Eiffel H!dg(d^
class HELLO_WORLD rQPV@J]:
djtCv;z
creation 4o*wLCo7^
make qY$/i#
feature $17utJ58
make is J(\f(jh/
local elf2!
io:BASIC_IO F&x9.
do %B'*eBj~fw
!!io -5t.1/
io.put_string("%N Hello, world!") DkGC+Dw
end -- make !Wz%Hy:ZK
end -- class HELLO_WORLD !r*Ogv[
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VUaYK
Erlang gIfl}Jat
-module(hello). &k4)&LQJ
-export([hello_world/0]). t)Mi,ljY[
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hello_world() -> io:fwrite("Hello, World!\n"). 'X$2gD3c9
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ak:Y<}
Forth R^DZ@[\iV
." Hello, world!" CR 5crd.1@^
4<j)1i=A
:gD=F &V
Fortran =;hz,+
WRITE(*,10) P!c.!8C$
10 FORMAT('Hello, World!') Oz3JMZe
STOP ""0 cw
END Q L0
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iJ&*H)}^
HTML qK_jgj=w
<HTML> c#-o@`Po
<HEAD> Y@jO#6R
<TITLE> Hello World! </TITLE> |`N|S
</HEAD> 2=\} 0
<BODY> pTQ70V3
<p>Hello World!</p> y\?T%g
</BODY> HLlp+;CF><
</HTML> 0bl?dOV{
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CXI%8eFXe$
HQ9+ hDn?R}^l{
H -:$#koW
K:<j=j@51
TJ_<21a
INTERCAL sz"N,-<Ig
PLEASE DO ,1 <- #13 Whd\Ub8(
DO ,1 SUB #1 <- #238 rEoMj)~\4&
DO ,1 SUB #2 <- #112 43'!<[?x
DO ,1 SUB #3 <- #112 r5>1n/+6
DO ,1 SUB #4 <- #0 8q}955Nl
DO ,1 SUB #5 <- #64 m@,u&9K
DO ,1 SUB #6 <- #238 ZC99/NWN
DO ,1 SUB #7 <- #26 L?Fb}
DO ,1 SUB #8 <- #248 prk@uYCa =
DO ,1 SUB #9 <- #168 >bLhCgF:"
DO ,1 SUB #10 <- #24 TJO?BX_9
DO ,1 SUB #11 <- #16 }x A Eu,n^
DO ,1 SUB #12 <- #158 )/p=ZH0[
DO ,1 SUB #13 <- #52 'vP"&lrn
PLEASE READ OUT ,1 }!`_Bz:
PLEASE GIVE UP 0XSMby?t`
p.ks
jD
D;Bij=
Java 2]UwIxzR
public class Hello 2+oS'nL
{ _w.H]`C!X
public static void main(String[] args) x@p1(V.
{ .rcXxV@f
System.out.println("Hello, world!"); k9*6`w
} "n, %Hh
} gj@>9
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GzN /0:b
JSP riu_^!"Z_
<% =^5#o)~BB
out.print("Hello, world!"); v[b|J7k
%> }~+q S`
nw
8=-/0y9,
MIXAL s}93nv*ez
TERM EQU 19 the MIX console device number qy( kb(J
ORIG 1000 start address ) >H11o{&
START OUT MSG(TERM) output data at address MSG C9j3|]nyL
HLT halt execution ']:>Ww.S
MSG ALF "MIXAL" Maw$^Tz,
ALF " HELL" IQ $/|b/
ALF "O WOR" PN"=P2e/ 6
ALF "LD " T!2gOe
END START end of the program ($X2SIZh
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G@4n]c_
Nuva Fp(-&,L0fc
<..直接输出..> nj<nW5[
Hello, world! m5%E1k$=
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<..或者..> k fY0u
Vwpy/5Hmp
<. [+wLy3_
// 不带换行 Q-} cB
? "Hello, world!" U}<' [o
V
BMH?BRi
// 或者 bcUa'ZfN<
j-k]|0ea}
// 带换行 -1%AM40j
?? 'Hello, world!' We@wN:
.> av>Ff6w)Y
>l =;6QL
ja%IGaH;s
OCaml gJJ BRn{MI
let main () = z]R% A:6K
print_endline "Hello world!";; v9GfudTZR
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