“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。 3?a`@C&x
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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》。 F-wAQ:
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以下是用不同语言写成的Hello World程序的几个例子: ;&O?4?@4
Ada 2P^|juc)sU
with Ada.Text_Io; use Ada.Text_Io; s{Qae=$Q
procedure Hello is h8asj0
begin wpM2{NTP
Put_Line ("Hello, world!"); 6whPW
.
end Hello; ?iP7Ki
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汇编语言 qisvGHo
Q}@t'
x86 CPU,DOS,TASM xyL)'C
MODEL SMALL B#S8j18M
IDEAL h'-4nu;*
STACK 100H 8C@u+tx
/S]RP>cQ
DATASEG ;7z6B|8
HW DB 'Hello, world!$' ?'TK~,dG/
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zgN%
CODESEG q7Hf7^a
MOV AX, @data HK/WO jr
MOV DS, AX 1v]%FC`
MOV DX, OFFSET HW 49Jnp>h
MOV AH, 09H =0d|F
8
INT 21H n8<?<-2
MOV AX, 4C00H 9)1Ye
INT 21H j+gxn_E
END =|z:wlOs
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x86 CPU,GNU/Linux,NASM AhN3~/u%7
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). V'j+)!w5
;Enter this into "hello.asm" then type: xKSQz
;"nasm -f elf hello.asm" X?'cl]1?
;"ld hello.o -o hello" +_7a/3kh
;"./hello" f"FFgQMkv
ad: qOm
section .data ;data section declaration .g*N+T6O
msg db 'Hello World!',0AH X>[i<ei
len equ $-msg ;string length (0NffM1
mp8GHV
section .text ;code section declaration C12UZE;
global _start ;entry point (start of execution) 7?=^0?a
_start: mov edx,len ;string length XG.[C>
mov ecx,msg ;string start V+"%BrM
mov ebx,1 ;file handle: stdout '%rT]u3U
mov eax,4 ;sys_write pr#%VM[':R
int 80h ;kernel system call WT ;2aS:
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mov ebx,0 ;return value VhkM{O
mov eax,1 ;sys_exit MT&aH~YB
int 80h ;kernel system call |X8?B=
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x86 CPU,Windows,MASM32 rQimQ|+
.386 "sN%S's
.model flat,stdcall $CE dJ+0z
option casemap:none cb9-~*1
;Include 文件定义 4]U=Y>\Sr
include windows.inc _cs(f<>oCO
include user32.inc T o["o!(;z
includelib user32.lib M(I%y0
include kernel32.inc XvaIOt>A
includelib kernel32.lib }i~k:kmV
;数据段
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.data !Ap5Uwd
szCaption db 'A MessageBox!',0 xx`YBn~"
szText db 'Hello,world!',0 @.W; 3|~qc
;代码段 M
5sk&>
.code h~ k<"
start: vdq=F|&
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK \l:R]:w;ZI
invoke ExitProcess,NULL <==uK>pET
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> :'DyZy2Fd
end start {}YA7M:L
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%VO+\L8Fs
AWK s-"KABEE
BEGIN { print "Hello, world!" } _Z0 .c@0
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BASIC uB
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传统版BASIC(例如GWBASIC): @njNP^'Kx
"u^Erj# /
10 PRINT "Hello, world!" 'v]0;~\mp>
20 END ,j*9 )
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或在提示符输入: 3<^Up1CaZ
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?"Hello, world!":END { ^dq7!
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现代版BASIC(例如Quick BASIC): dS6 $
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Print "Hello, world!" ?kO.>o
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以下的语句在Quick BASIC中同样有效: =1Sny7G
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? "Hello,world!" >N |?>M*
D m0)%#
qf x*a88
BCPL U T\4Xk<
GET "LIBHDR" /yG7!k]Eg
12Oa_6<\0;
LET START () BE inGUN??
$( f`hZb
WRITES ("Hello, world!*N") =VD],R)
$) 6'^E
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;TJpD0
n*7^lAa2
Befunge ,->K)Rs ;
"!dlrow olleH">v Ok_}d&A
, ]<^2B?}
^_@ zQyI4RHG[
hBX*02p
M3jUnp&
Brainfuck _^BA;S@
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ^K<3_D>1>
+++++++++++++++.>.+++.------.--------.>+.>. "/zgh
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C Yg8*)u0
#include <stdio.h> -P;0<j@6k5
, MXU]{
int main(void) 'SXHq>#gA
{ o.ZR5 `.
printf("Hello, world!\n"); !_W/p`Tc
return 0; qzZ/%{Ak
} nFQuoU]ux
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vIRT$W' O}
C++ r:bJU1P1$s
#include <iostream> qofAA!3z
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int main() 6B?jc/V.R
{
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std::cout << "Hello, world!" << std::endl; VM%g QOo<
return 0; =de'Yy:\-
} 8ao-]QoMZ
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C++/CLI eUy*0
int main() &[[r|
{ 1Vu#:6%
System::Console::WriteLine("Hello, world!"); e`n ZiM>
} >/A]C$?3
WML--<dU
C-y MWr
C# (C Sharp) K83'`W^
class HelloWorldApp D6L+mTN
{ aZb\uMePK
public static void Main() >:-e
{ HEVjK$
System.Console.WriteLine("Hello, world!"); "Wj{+|f
} G[>NP#P
} u+j\PWOtm
1d< b\P0
%6 *c40
COBOL Z<;W*6J
IDENTIFICATION DIVISION. ["D!IqI:
PROGRAM-ID. HELLO-WORLD. D&):2F^9.
v.|#^A?Qx
ENVIRONMENT DIVISION. 8%K{l g"
$U_(e:m}f
DATA DIVISION. r-y;"h'
_Ay^v#a
PROCEDURE DIVISION. q SNCBn '
DISPLAY "Hello, world!". rQ.zqr
STOP RUN. o-=|}u]mz
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8'*x88+
Common Lisp MDF_Xr-hZ
(format t "Hello world!~%") O(/~cQ
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86{>X5 +
DOS批处理 j,i9,oF6]
@echo off pWxk^qhe/
echo "Hello, world!" _RaE:)
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~P'.R.e
Eiffel y^C5_w(^jZ
class HELLO_WORLD h^ Cm\V
D3C 7f'
creation fQ5v?(
make rn|]-^ku/
feature fB+h( 2N~
make is -~]H5er`
local o-@01_j
io:BASIC_IO F-s{#V1=
do UDJjw
!!io S($/Ov
io.put_string("%N Hello, world!") %C/p+Tg
end -- make @%,~5{Ir
end -- class HELLO_WORLD on7
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K%dQ;C*?
Erlang 5f7id7SI
-module(hello). ^t})T*hM0
-export([hello_world/0]). 4H6Fq*W{k
M[`[+5v
hello_world() -> io:fwrite("Hello, World!\n"). A&M_ J
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A1prYD
Forth "kP,v&n
." Hello, world!" CR a>OYJe
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Fortran Po)U!5Tm
WRITE(*,10) YD[HBF)~j
10 FORMAT('Hello, World!') 5[4wN(
)
STOP 7GO9z<m)
END _|u}^MLO
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G Y%5N= u
HTML v^ ^Ibv
<HTML> bW=q G
<HEAD> b,^ "-r
<TITLE> Hello World! </TITLE> =_`q;Tu=
</HEAD> /F;2wT;
<BODY> G*4I;'6
<p>Hello World!</p> wnC} TWxX
</BODY> mS'Ad<
</HTML> j{Px}f(=
Z4i))%or
x:Q\pZ
HQ9+ !\7M7
H ~6;I"0b5
3`&FXgo
rp4D_80q
INTERCAL @/^<9
PLEASE DO ,1 <- #13 8r(awp
DO ,1 SUB #1 <- #238 "Ol:ni1
DO ,1 SUB #2 <- #112 zwV!6xG
DO ,1 SUB #3 <- #112 \ UrD%;sq
DO ,1 SUB #4 <- #0 DP),~8
DO ,1 SUB #5 <- #64 X:UlL"G
DO ,1 SUB #6 <- #238 ]owgsR
DO ,1 SUB #7 <- #26 th73eC'
DO ,1 SUB #8 <- #248 ^W$R{`
DO ,1 SUB #9 <- #168 Hl}lxK,]
DO ,1 SUB #10 <- #24 :f[ w
DO ,1 SUB #11 <- #16 eE'P)^KV
DO ,1 SUB #12 <- #158 LL
e*|:
DO ,1 SUB #13 <- #52 p/(Z2N"
PLEASE READ OUT ,1 .jD!+wv{9
PLEASE GIVE UP R%szN.cI
oYN"L
?^Aj\z>
Java "|X'qKS(H{
public class Hello %Lh%bqGz
{ ijOp{
public static void main(String[] args) , ~
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{ .6`r`|=
System.out.println("Hello, world!"); [
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}
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} inU5eronuj
x\Q}fk?{t
A8.noV
JSP 6m$X7;x}
<% {`D]%eRO
out.print("Hello, world!"); ~Y`ys[Z m
%> D`@a*YIq
wKpBH}
Q$ew.h
MIXAL O(I^:_eH
TERM EQU 19 the MIX console device number Xr
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ORIG 1000 start address ^<!R%"o-
START OUT MSG(TERM) output data at address MSG A{s-g>s
HLT halt execution t[TM\j0jW
MSG ALF "MIXAL" iQ" LIeD
ALF " HELL" {A==av
ALF "O WOR" 4wSZ'RTSR
ALF "LD " ]6M<c[H>
END START end of the program I-^sJ@V;
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Nuva !!Ww#x~k$[
<..直接输出..> ^gcB+
Hello, world! bdWdvd:
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<..或者..> W7n^]~V
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pC|R,^
<. eOb--@~8
// 不带换行 rY(7IX
? "Hello, world!" v'?Smd1v
/
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// 或者 )f$4:Pq
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// 带换行 UdrgUqq)
?? 'Hello, world!' !(q@sw(
.> KyrZ&E.`
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9.(|ri
OCaml ,+df=>$W
let main () = t|'%0 W
print_endline "Hello world!";; )ItABl[{
[ifw}(
0JtM|Mg
Pascal F?'
program Hello; .bY>++CAPA
begin ZY,$oFdsi
writeln('Hello, world!'); 'l(s)Oa{M:
end. /4(HVua
=!L}/Dl
}~W/NP_F
Perl L91vp'+2
#!/usr/local/bin/perl f#&z