“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。 &jf :7y
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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》。 Ylll4w62N
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以下是用不同语言写成的Hello World程序的几个例子: y}5H<ZcXA
Ada < ppg$;
with Ada.Text_Io; use Ada.Text_Io; > c?Z.of
procedure Hello is F%t`dz!L
begin y'pAhdF
Put_Line ("Hello, world!"); kl_JJX6jPP
end Hello; DnP>ed"M!
R-"A*/A 2
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汇编语言 Y dmYE$
<MI>>$seiJ
x86 CPU,DOS,TASM \L(~50{(
MODEL SMALL 3Qfj=;
4
IDEAL 4WZ:zr N
STACK 100H 1pVagLlb:7
KZ
pqbI Z
DATASEG Uoh!1_oV
HW DB 'Hello, world!$' kb]PWOz
`[w:l[i
CODESEG CYmwT>P+*4
MOV AX, @data {xp/1?Mo*
MOV DS, AX vZmM=hW ~
MOV DX, OFFSET HW iZB?5|*
MOV AH, 09H ogH{
INT 21H Lk6UT)C
MOV AX, 4C00H 1j
"/}0fx
INT 21H I1S*=^Z_U
END DDyeNuK
L\XnTL{
/Zap'S/
x86 CPU,GNU/Linux,NASM 9H$#c_zrq
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). X<m#:0iD
;Enter this into "hello.asm" then type: [*Nuw_l
;"nasm -f elf hello.asm" VChNDHiH
;"ld hello.o -o hello" Jc"xH~,
;"./hello" 61HU_!A8S
iF?4G^
section .data ;data section declaration \L-o>O
msg db 'Hello World!',0AH h.E8G^}@
len equ $-msg ;string length /\V-1 7-
+Fp8cT=1
section .text ;code section declaration @-Tt<pl'L
global _start ;entry point (start of execution) LWuciHfd+
_start: mov edx,len ;string length E4GtJ`{X
mov ecx,msg ;string start Cb5;l~}L
mov ebx,1 ;file handle: stdout {M96jjiInf
mov eax,4 ;sys_write ~tWIVj{
int 80h ;kernel system call YD_hg#=n
4!64S5(7t
mov ebx,0 ;return value /-)\$T1d
mov eax,1 ;sys_exit *JDQaWzBd
int 80h ;kernel system call z^j7wMQ
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GuPxN}n
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x86 CPU,Windows,MASM32 c!vtQ<h-
.386 tAO,s ZW
.model flat,stdcall sygxV
option casemap:none d
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;Include 文件定义 DJvmwFx
include windows.inc ]1hW/!
include user32.inc "`qmeZ$rg
includelib user32.lib uT:'Kkb!
include kernel32.inc :jlKj} 4A
includelib kernel32.lib 3oc p4x`[
;数据段 E1 IT>_
.data Ybo:2e
szCaption db 'A MessageBox!',0 ce@1#}*
szText db 'Hello,world!',0 }W^%5o87{
;代码段 >zFk}/
.code GdHFgxI
start: t%Sgw%f
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ^S:S[0\,
invoke ExitProcess,NULL Cp4 U`]
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ix2V?\
end start `Y>'*4a\
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AWK vy&'A$ H
BEGIN { print "Hello, world!" } sG{f xha
'/8{Mx+
C{(&Yy"
BASIC pURtk-Fr2
传统版BASIC(例如GWBASIC): WxLbf+0o
M3 MB{cA2
10 PRINT "Hello, world!" nSY3=Edx=
20 END 1T&NU
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或在提示符输入: 'u@,,FFz[K
gQ90>P:
?"Hello, world!":END >NLG"[\
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现代版BASIC(例如Quick BASIC): w5fVug/;P
#uTNf78X
Print "Hello, world!" _L?MYkD
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以下的语句在Quick BASIC中同样有效: S$#"bK/p^
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? "Hello,world!" ?APzb4f^W
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Gak@Z!|
BCPL X83,fCCl5
GET "LIBHDR" kU:ge
3dO~Na`S
LET START () BE uoJ@Jt'j
$( [B~*88T
WRITES ("Hello, world!*N") de7
\~$
$) +4L]Z;k
#aI(fQZe
rhff8C//'
Befunge 1 S<E=7
"!dlrow olleH">v 5@QJ+@j|
, F*u"LTH
^_@ p^.qwP\P
we:P_\6
2|`7_*\
Brainfuck l4Au{%j\
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 6roq 1=
+++++++++++++++.>.+++.------.--------.>+.>. O>R@Xj)M
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CFK{.{d]B
C t@X{qm:%Z
#include <stdio.h> 8'WoG]E_
r+=%Ag
int main(void) 9'5< b
{ ?)NgODU
printf("Hello, world!\n"); [0bp1S~
return 0; ._%8H
} Jb/VITqN4
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*@;bWUJ
C++ GG&J
#include <iostream> L"8Z5VHA&&
SI`ems{1>c
int main() vVhSl$mW
{ mzO5&h7
std::cout << "Hello, world!" << std::endl; CwjKz*'[g
return 0; i[Qq,MmC
} / jLb{Ky
]hMs:$}
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C++/CLI 8Y"R@'~
int main() E]w2
{%
{ ?_-5W9
System::Console::WriteLine("Hello, world!"); sA~Ijg"6
} D`'h8:\
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zK_Q^M`
C# (C Sharp) ''^2rF^
class HelloWorldApp y$Fk0s*>
{ ]qb>O:T
public static void Main() ajCe&+
{ Z-j?N{3&
System.Console.WriteLine("Hello, world!"); fQU5' wGp
} cb=ixn
} fJ GwT
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ffW-R)U|3
COBOL l&|Tb8_'
IDENTIFICATION DIVISION. bg\9Lbjr
PROGRAM-ID. HELLO-WORLD. G#L6;
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ENVIRONMENT DIVISION. `#*`hH8
"M;[c9
DATA DIVISION. &t U&ZH
{3T&6 LA
PROCEDURE DIVISION. z? Iu;X
DISPLAY "Hello, world!". AvVPPEryal
STOP RUN. v65]$%F?
lFp : F5
XL/V>`E@
Common Lisp o\<JG?P
(format t "Hello world!~%") FM=XoMP q
e%km}m A
5KNa-\
DOS批处理 FKtG
@echo off Z*R~dHr
echo "Hello, world!" :*M2@
sa}.o Zp Q
SJ}PV:x
Eiffel C).+h7{nd
class HELLO_WORLD ~OMo$qt`lP
|H(i)yu"5'
creation # uy^AC$
make _Tf
%<E
feature \#v(f2jPF
make is )j QrD`
local iu9+1+-
io:BASIC_IO ,V9r2QY
do .?5~zet#;
!!io vA{DF{S4
io.put_string("%N Hello, world!") }tW1\@
=
end -- make wE-y4V e
end -- class HELLO_WORLD G?^w
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\j<aFOT(
Erlang as73/J6
-module(hello). ujn7DBE"
-export([hello_world/0]). 6P
T)
Xyu0np;@
hello_world() -> io:fwrite("Hello, World!\n"). y: ]
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)xL_jSyh
Forth tb>Q#QB&u
." Hello, world!" CR F=?GV\Tw
|2GrOM&S
ewdcAF5
Fortran hh$i1n
WRITE(*,10) 4}Y? :R
10 FORMAT('Hello, World!') ?Ld:HE
STOP 8.&P4u i
END R|k!w]
.zy2_3:
/uPMzl
HTML #3O$B*gV6
<HTML> ?k=)T]-}
<HEAD> YkQ=rurE
<TITLE> Hello World! </TITLE> 9 ge'Mo
</HEAD> |fb*<o eT
<BODY> *&5./WEOH
<p>Hello World!</p> uG+eF
</BODY> k!T-X2L=
</HTML> [,Y;#;
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HQ9+ /VFQbJ+`
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p`S~UBcL.
INTERCAL 'X\C/8\
PLEASE DO ,1 <- #13 DB'3h7T
DO ,1 SUB #1 <- #238 Va4AE)[/*
DO ,1 SUB #2 <- #112 -j^G4J
DO ,1 SUB #3 <- #112 _QtW)\)5\
DO ,1 SUB #4 <- #0 V0bKtg1f?-
DO ,1 SUB #5 <- #64 !-7<x"avm
DO ,1 SUB #6 <- #238 >J,IxRGi
DO ,1 SUB #7 <- #26 bv``PSb3
DO ,1 SUB #8 <- #248 fG<[zt\e
DO ,1 SUB #9 <- #168 #%]?e
N
DO ,1 SUB #10 <- #24 Pk8(2fAYk
DO ,1 SUB #11 <- #16 mp0s>R
DO ,1 SUB #12 <- #158 <^+&A7Q-_
DO ,1 SUB #13 <- #52 {;38&