“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。 ^~IcQ!j/5
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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》。 L$kAe1 V^m
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以下是用不同语言写成的Hello World程序的几个例子: KI QBY!N+
Ada <T% hfW
with Ada.Text_Io; use Ada.Text_Io; 7[<sl35
procedure Hello is r[4F?W
begin z4`n%~w1b
Put_Line ("Hello, world!"); X@4d~6k?
end Hello; Leick6
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汇编语言 )Ua2x@j'C@
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x86 CPU,DOS,TASM Bw7:ry
MODEL SMALL F"TI9ib
IDEAL +VCo=oA
STACK 100H qtQ:7WO
%+"AF+c3r
DATASEG utS Mx(
HW DB 'Hello, world!$' s H[34gCh;
rbS=Ewk
CODESEG kx(:Z8DX
MOV AX, @data b!P;xLcb
MOV DS, AX x=+I8Q4:
MOV DX, OFFSET HW 54j
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MOV AH, 09H VQ3&
INT 21H Ri0+nJ6
MOV AX, 4C00H Q>*K/%KD
INT 21H e|9Bzli{
END #7"5Y_0-
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x86 CPU,GNU/Linux,NASM \Rt
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). eajL[W^>
;Enter this into "hello.asm" then type: qz2d'OhmtH
;"nasm -f elf hello.asm" V1qHl5"
;"ld hello.o -o hello" V-u\TiL
;"./hello" m_f^#:
sB!A:
section .data ;data section declaration 4"=pcHNV
msg db 'Hello World!',0AH Q{kuB+s
len equ $-msg ;string length Z28@yD+
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section .text ;code section declaration k/Q]Ke
global _start ;entry point (start of execution) `-2`UGB-
_start: mov edx,len ;string length akwVU\RP
mov ecx,msg ;string start `8Ix&d3F
mov ebx,1 ;file handle: stdout z05pVe/5
mov eax,4 ;sys_write "0mR*{nF
int 80h ;kernel system call ?-i&6 i6Y
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mov ebx,0 ;return value ^ 2tCDm5
mov eax,1 ;sys_exit ;[ojwcK[ZF
int 80h ;kernel system call \t3i9#Q
Pr'py
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x86 CPU,Windows,MASM32 SM?<woY=*
.386 <jjaqDSmz
.model flat,stdcall y6\#{
option casemap:none V#Eq74ic
;Include 文件定义 :}cAq/
include windows.inc Z_/03K$q
include user32.inc $TiAJ}:
includelib user32.lib U6"50G~u
include kernel32.inc kS>j!U(%d
includelib kernel32.lib Hr'#0fW
;数据段 1l{n`gR
.data DzMk eX
szCaption db 'A MessageBox!',0 nLQJ~("
szText db 'Hello,world!',0 QaV*}W
;代码段 l!2.)F` x
.code =Vfj#WL
start: dx#N)?
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK l\)Q3.w
invoke ExitProcess,NULL Uz6B\-(0p
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 6gn|WO=Wf
end start hsh
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BEGIN { print "Hello, world!" } >ObpOFb%
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BASIC UqH7e c
传统版BASIC(例如GWBASIC): E[y?\{
BFY~::<b
10 PRINT "Hello, world!" /W;;7k
20 END &b%6pVj
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或在提示符输入: c?|/c9f
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?"Hello, world!":END H74hv`G9
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现代版BASIC(例如Quick BASIC): p^2pv{by
RZ -w,~
Print "Hello, world!" e.Ii@<
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以下的语句在Quick BASIC中同样有效: >DDQ7
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? "Hello,world!" &{8 "-
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R1U\ /
BCPL BD#4=u
GET "LIBHDR" r`5;G4UI
;@sxE}`?g
LET START () BE G|o-C:~
$( {T$;BoR#O
WRITES ("Hello, world!*N") d;f,vN(
$) !-: a`Vs+
M 3^p,[9r#
/8.;
Befunge 1 %*X,E
"!dlrow olleH">v 3#dUQ1qo6
, 9[:nWp^
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z\fk?Tj<ro
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Brainfuck WS;3a}u
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< rGoB&% pc
+++++++++++++++.>.+++.------.--------.>+.>. l.C{Ar
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C }V`Fz',lZ
#include <stdio.h> 5^pQ=Sgt
=\`9 \Gd
int main(void) dNIY`u
{ aX0sy\Z]j
printf("Hello, world!\n"); !zD| @sX{
return 0; K?P.1H`
} #E>f.:)
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C++ 594$X@!v
#include <iostream> IDv@r\Xw
S# SA :>8s
int main() !iITX,'8
{ bvZmozbD
std::cout << "Hello, world!" << std::endl; [4"%NY
return 0; 3&_(D)+
} OG0ro(|dI
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C++/CLI uI.4zbgl[
int main() _Tev503
{ O=ci"2!\-
System::Console::WriteLine("Hello, world!"); |qfnbi-\
} `Q}.9s_ri
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C# (C Sharp) +HUI1@ql
class HelloWorldApp wMei`svY
{ jUdW o}/
public static void Main() /TS>I8V!
{ 5Gg`+o
System.Console.WriteLine("Hello, world!"); H`m|R
} y%p&g
} P6;L\9=H<
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COBOL IN),Lu0K
IDENTIFICATION DIVISION. X2Y-TET
PROGRAM-ID. HELLO-WORLD. X=_N7!
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ENVIRONMENT DIVISION. O3B\K <l
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DATA DIVISION. %]RzC`NZ
O" n /.`
PROCEDURE DIVISION. bQEQHqY5
DISPLAY "Hello, world!". dorZ O2Uc
STOP RUN. (T!Q
" ?n~ /9`
>=[w{Vn'Mf
Common Lisp h,0mJj-ma
(format t "Hello world!~%") KGzBK:
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DOS批处理 _K8ob8)m
@echo off :W 8DgL>l
echo "Hello, world!" #2{ };)
"~N#Jqzr:
xsV(xk4
Eiffel @tRq(*(/:
class HELLO_WORLD #*1\h=bzmW
qGr(MDLc
creation Dm"GCV
make VctAQ|h^
feature z9u"?vdA
make is O83vPK
3
local +^{yJp.H#
io:BASIC_IO j ]F
Zy
do }I9\=jT
!!io [D^KM|I%+
io.put_string("%N Hello, world!") 0r.*7aXu
end -- make `` 6?;Y
end -- class HELLO_WORLD M~zdcVTbH
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