“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。 L32 [IL|
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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$a
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以下是用不同语言写成的Hello World程序的几个例子: K2gg"#ft?
Ada WN`|5"?$
with Ada.Text_Io; use Ada.Text_Io; KvtX>3#qM
procedure Hello is CgxGvM4
begin lAZn0EU
Put_Line ("Hello, world!"); !c#~g0H+
end Hello; ?loP18S
b
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j 5{"j
汇编语言 gPYF2m
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x86 CPU,DOS,TASM ]%I}hjJ
MODEL SMALL DuzJQSv
IDEAL }_GI%+t
STACK 100H KH_~DZU*5
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DATASEG WiBO8N,%`
HW DB 'Hello, world!$' d|Q_Z@;JF
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w}
CODESEG !hS~\+E
MOV AX, @data ?Gr2@,jlD
MOV DS, AX HAOl&\)7"_
MOV DX, OFFSET HW ~4 {|
MOV AH, 09H .e|VW)
INT 21H WK)2/$7@
MOV AX, 4C00H IP3%'2}-
INT 21H "T0s7LWp
END -Uu65m~:{k
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x86 CPU,GNU/Linux,NASM mO|YX/>
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). !T3b]0z
;Enter this into "hello.asm" then type: L28DBj E)A
;"nasm -f elf hello.asm" ;(1Xb
;"ld hello.o -o hello" ) }.<lSw
;"./hello" %;0l1X
h'D-e5i
section .data ;data section declaration dYP-QUM$7
msg db 'Hello World!',0AH N~/D| ?P~2
len equ $-msg ;string length GI ~<clhf
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section .text ;code section declaration ?cF-w!>o8
global _start ;entry point (start of execution) HU='Hk!
_start: mov edx,len ;string length :vqfWK6mv
mov ecx,msg ;string start l-GQ AI8
mov ebx,1 ;file handle: stdout Mr8r(LGY
mov eax,4 ;sys_write [kjm EMF9i
int 80h ;kernel system call |KM<\v(A{
p`
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mov ebx,0 ;return value [`u3SN/P
mov eax,1 ;sys_exit %#^)hX,+Q
int 80h ;kernel system call 0i4X,oHjG
;is *[r\|1
%^r}$mfy:0
x86 CPU,Windows,MASM32 B<`'h
.386 aeP
6JHj
.model flat,stdcall X9d~r_2&m<
option casemap:none H /kSFf{
;Include 文件定义 Rp!R&U/
include windows.inc h.`U)6*?&N
include user32.inc kDrqV{_
includelib user32.lib >*5+{~k~4
include kernel32.inc cjd Z.jR2
includelib kernel32.lib kCq]#e~wq
;数据段 c|s*(WljY
.data 8\85Wk{b
szCaption db 'A MessageBox!',0 ?Cu1"bl
szText db 'Hello,world!',0 Xg](V.B6
;代码段 ?-"%%#
.code \;b)qB
start: *i}Nb*Z3
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK -RSPYQjz
invoke ExitProcess,NULL Q|^TR__
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> jf_0IE
end start N<xf=a+j
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AWK e@-"B9~
BEGIN { print "Hello, world!" } b :Knc$
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BASIC t5%\`Yo?
传统版BASIC(例如GWBASIC): =-ky%3:`@
2 us-s
10 PRINT "Hello, world!" C3Hq&TVf/
20 END ?D].Za^km
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或在提示符输入: %'}L.OvG
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?"Hello, world!":END zS@"ITy
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现代版BASIC(例如Quick BASIC): I[~EQ{Iz
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Print "Hello, world!" )C
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以下的语句在Quick BASIC中同样有效: *p;Fwj]
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? "Hello,world!" $_-f}E
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BCPL @K; 4'b~
GET "LIBHDR" Uk=jQfA*J
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LET START () BE gT$`a
$( nZe2bai
WRITES ("Hello, world!*N") p9k'.H^:_
$) ohqi4Y!j/~
T !C39T
UU')V
Befunge ?4Z`^uy
"!dlrow olleH">v iB1"aE3
, _oK*1#Rm8
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Brainfuck c8!q_H~
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< f
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+++++++++++++++.>.+++.------.--------.>+.>. oUrNz#U
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C
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#include <stdio.h> $'#hCs
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int main(void) K*^3FO}JG
{ "J|{'k`
printf("Hello, world!\n"); ha+)ZF
return 0; LUSBRr8
} ' jAX&7G`
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C++ Kx,#Wg{H
#include <iostream> qzD<_ynA
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int main() .!|\Y!]^r
{ Gf` `0F)
std::cout << "Hello, world!" << std::endl; C sXV0
return 0; V0 70oZ
} ZBYFQTEE
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C++/CLI +/+:D9j ,
int main() G)~/$EF,_
{ L\;n[,.
System::Console::WriteLine("Hello, world!"); ;ED` 7
} o@T-kAEf-.
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C# (C Sharp) R^u 1(SF
class HelloWorldApp ]J|]IPXy
{ cX~J6vNy5
public static void Main() {v3?.a$u
{ i`k{}!F
System.Console.WriteLine("Hello, world!"); pE&'Xr#P>
} +UvT;"
} Zw@=WW[Q`p
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COBOL MKiP3kt8
IDENTIFICATION DIVISION. P|U9f6^3
PROGRAM-ID. HELLO-WORLD. ^&[Z@*A8#
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ENVIRONMENT DIVISION. u7>{#]
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DATA DIVISION. QYB66g:
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PROCEDURE DIVISION. /&>vhpZ}
DISPLAY "Hello, world!". LZ'Y3 *
STOP RUN. ;*+wg5|
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Common Lisp TmEJ!)*
(format t "Hello world!~%") QZZt9rA;
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Crg@05Z
DOS批处理 P >>VBh?
@echo off +H**VdM6s
echo "Hello, world!" ;ElwF&"!X
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|~]@hs~
Eiffel G4<M@ET
class HELLO_WORLD BbCaIt
qmy3pnL
creation 1`q>*S](
make YJm64H,[
feature v\ <4y P
make is k1_"}B5
local qGkD] L
io:BASIC_IO )<K3Fz
Bs
do A7enC,Ey
!!io 5fDp"-
io.put_string("%N Hello, world!") zd0[f3~
end -- make 9%iv?/o*L
end -- class HELLO_WORLD }trQ<*D
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Erlang J#) %{k_
-module(hello). BenUyv1d
-export([hello_world/0]). |T+YC[T#v
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hello_world() -> io:fwrite("Hello, World!\n"). 6` 4,
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[,TK"
Forth
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." Hello, world!" CR u5I#5
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Fortran S%IhpTSe6
WRITE(*,10) g!I0UAm
10 FORMAT('Hello, World!') Wagb|B\
STOP .vov ,J!Y
END b{(= C
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HTML +2JC**)I
<HTML> @p[ml m
<HEAD> <d~IdK'\x
<TITLE> Hello World! </TITLE> 9?I?;l{
</HEAD> qk_YFR?R
<BODY> \rSofn#c
<p>Hello World!</p> Cm%xI&Y
</BODY> V2o1~R~
</HTML> P*g:rg
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