“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。 xS|9Gk
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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》。 u@_|4Bp,"
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以下是用不同语言写成的Hello World程序的几个例子: T?1BcY
Ada r&LZH.$oh
with Ada.Text_Io; use Ada.Text_Io; wkp2A18n
procedure Hello is ZXnacc~s
begin B?j t?
Put_Line ("Hello, world!"); {)qr3-EM#
end Hello; x# 0?$}f<
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0F)v9EK(W4
汇编语言 edL2ax
cO5F=ZxR
x86 CPU,DOS,TASM dj0%?g>
MODEL SMALL gv67+Mf
IDEAL QM(xMq
STACK 100H irlFB#..
[<XYU,{R
DATASEG sa.H,<;
HW DB 'Hello, world!$' }TTghE!
T,!EL+o4
CODESEG l= {Y[T&
MOV AX, @data m1W) PUy
MOV DS, AX -E}X`?WhD
MOV DX, OFFSET HW fqI67E$59
MOV AH, 09H 0Md>-H;ZY
INT 21H gAqK/9;
MOV AX, 4C00H \c\~k0u
INT 21H T";evM66
END *O[/KR%
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x86 CPU,GNU/Linux,NASM d[6 'w ?
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). y]Nk^ga:U6
;Enter this into "hello.asm" then type: N}#Rw2Vl
;"nasm -f elf hello.asm" icb)JZ1K
;"ld hello.o -o hello" kN/YnY*J<
;"./hello" .2%t3ul[
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section .data ;data section declaration f&CQn.K"
msg db 'Hello World!',0AH $I9&cNPv
len equ $-msg ;string length $.D)Llcq
XR ..DVab
section .text ;code section declaration a]p9[Nk
global _start ;entry point (start of execution) ~u%$ 9IhM
_start: mov edx,len ;string length )h@PRDI_
mov ecx,msg ;string start (GF}c\=T7
mov ebx,1 ;file handle: stdout {dxFd-K3
mov eax,4 ;sys_write AE:(:U\
int 80h ;kernel system call s~{rC{9X
},d^y:m
mov ebx,0 ;return value T^4 dHG-(
mov eax,1 ;sys_exit 0J+WCm`
int 80h ;kernel system call yP7b))AW9
2-@)'6"n
^`!+7!
x86 CPU,Windows,MASM32 <TVJ9l
.386 sUlf4<_zW
.model flat,stdcall kSV(T'#x
option casemap:none 2,:{ 5]Q$
;Include 文件定义 ;h1hz^Wq
include windows.inc Z7bJ<TpZ
include user32.inc s'yR2JYv
includelib user32.lib sgOau\E
include kernel32.inc \lG) J0
includelib kernel32.lib oJD]h/fQs
;数据段 /Pextj<
.data +IS6l*_y>6
szCaption db 'A MessageBox!',0 i[[.1MnS
szText db 'Hello,world!',0 F'|K>!H
;代码段 F^/KD<cgK
.code s[8M$YBf
start: Ub\^3f
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 6/ 5c|
invoke ExitProcess,NULL `^Ll@Cx"
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 4L,wBce;,t
end start .nZKy't
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AWK v@]SddP,?
BEGIN { print "Hello, world!" } ?GH/W#{o)
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BASIC MhA4C 8
传统版BASIC(例如GWBASIC): ;:Z5Ft m
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isf
10 PRINT "Hello, world!" c3GBY@m
20 END wlP3 XF?
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或在提示符输入: p>eYi \'
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?"Hello, world!":END /:]<z6R
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现代版BASIC(例如Quick BASIC): ?{aC-3VAT
4
. c1
Print "Hello, world!" Q3%]
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以下的语句在Quick BASIC中同样有效: x %`YV):*
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? "Hello,world!" ^[.}DNR95(
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wbJBGT{sm
BCPL U2?R&c;b
GET "LIBHDR" aV7VbC
S'^ q
LET START () BE ,,G"EF0A
$( iS)-25M'
WRITES ("Hello, world!*N") E9mu:T
$) ]e),#_M
{
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Befunge ;v\s 7y
"!dlrow olleH">v d)V8FX,t
, 9#7W+9
^_@ x#3*C|A
Z8Ig,
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Brainfuck p~3x=X4
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< T5|kO:CbHq
+++++++++++++++.>.+++.------.--------.>+.>. 2DPv7\fW
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C pl3ap(/
#include <stdio.h> &*"*b\
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int main(void) hsrf 2Xw[
{ OFtf)cGE
printf("Hello, world!\n"); XxMZU(5
return 0; UJh;Hp:
} 4 @{?4k-cq
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?-:2f#bC
C++ OS;
T;
#include <iostream> L~t<
0\r
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int main() N8pL2y:R[P
{ cQhr{W,Un
std::cout << "Hello, world!" << std::endl; `WXlq#:K
return 0; 3%?tUt
} `K5*Fjx
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R`c[?U
C++/CLI k o[w#j
int main() O%kUj&h^
{ WqF,\y%W*
System::Console::WriteLine("Hello, world!"); i:aW
.QZ.
} 3<W%z]k@M
HuTtp|zM>
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C# (C Sharp) 1X5g(B
class HelloWorldApp HQm_ K0$
{ 1V1I[CxlX
public static void Main() -%"PqA/1zj
{ cw!,.o%cD
System.Console.WriteLine("Hello, world!"); t([}a~1}
} { V6pC
} 0i_:J
}?9&xVh?\
Q"qI'*Kgt
COBOL V#dga5*]
IDENTIFICATION DIVISION. m@Yc&M~
PROGRAM-ID. HELLO-WORLD. EWD^=VITL
"wOfs$w%s
ENVIRONMENT DIVISION. 0h@FHw2d
x>[]Qk^?q
DATA DIVISION. W\kli';jyC
GHGyeqNM
PROCEDURE DIVISION. mcez3gH
DISPLAY "Hello, world!". g.Xk6"kO
STOP RUN. qazA,|L!
h`|04Q
@[3c1B6K
Common Lisp o]oiJvOr
(format t "Hello world!~%") \2s`mCY
z lr!
}9S}?R
DOS批处理 R7bG!1SHl
@echo off q;'f3Y
echo "Hello, world!" ZkbE&7Z
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&j4pC$Dj
Eiffel v(2N@s<%
class HELLO_WORLD Xi&J%N'
1]7gYNzV"
creation Ym6d'd<9(
make aZA``#p+
feature @V*dF|# /
make is &$
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local P"vrYom
io:BASIC_IO Uq
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do [r/zBF-.
!!io "313eeIt%i
io.put_string("%N Hello, world!") +"?+Be
end -- make >pU9}2fpT
end -- class HELLO_WORLD !__0Vk[s
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W'[V$*
Erlang X$Vi=f vt
-module(hello). TLdlPBnr8
-export([hello_world/0]). =01X
T D_@0Rd
hello_world() -> io:fwrite("Hello, World!\n"). eM5?fE&!&
^dQ{vL@9b9
8+F5n!
Forth 3z+l-QO8
." Hello, world!" CR <g[z jV9p
`R[Hxi
_Iy\,<
Fortran xVm-4gB
WRITE(*,10) qLN\%}69/
10 FORMAT('Hello, World!') JWn26,
STOP kka5=u
END
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jJ,_-ui
HTML >fPo_@O
<HTML> qkb'@f=
<HEAD> }47h0 i
<TITLE> Hello World! </TITLE> 2B,O/3y
</HEAD> TQa}Ps
<BODY> AJPvwu}D
<p>Hello World!</p> P6:C/B
</BODY> `Fy-"Uf
</HTML> #z `W ,^C
7{;it uqX
Jz@~$L
HQ9+ uw)7N(os\`
H .w2 ID
%q {q.(M#
*r7vDc
INTERCAL ',+yD9 @
PLEASE DO ,1 <- #13 !gsvF\XDM
DO ,1 SUB #1 <- #238 YDt+1Kw}D
DO ,1 SUB #2 <- #112 gAqK)@8-
DO ,1 SUB #3 <- #112 +#W94s~0V
DO ,1 SUB #4 <- #0 V2MOD{Maat
DO ,1 SUB #5 <- #64 J$dwy$n
DO ,1 SUB #6 <- #238 Uzu6>yT
DO ,1 SUB #7 <- #26 _fGTTw(
DO ,1 SUB #8 <- #248 }lJ;|kx$
DO ,1 SUB #9 <- #168 W yL+HB}
DO ,1 SUB #10 <- #24 zw0w."V
DO ,1 SUB #11 <- #16 UX 1
)((
DO ,1 SUB #12 <- #158 c'2d+*[
DO ,1 SUB #13 <- #52 A4K.,bZ
PLEASE READ OUT ,1 I=Y>z^4
PLEASE GIVE UP V~J5x >O
vF$i"^;tJ;
'rQ"Dc1D
Java (\V
i_
public class Hello PnlI {d
{ 'M90Yia
public static void main(String[] args) PNU(;&2<
{ $vO&C6m$
System.out.println("Hello, world!"); 6b|?@
} E8Dh;j
} 3a/n/_D
H}@:Bri
cTqkM@S
JSP Z:;}
<% P&-o>mM
out.print("Hello, world!"); t^t% >9o
%> ZzT=m*tQ&
p{FI_6db
v9$!v^U"D
MIXAL }[*'
TERM EQU 19 the MIX console device number p6VD*PT$&
ORIG 1000 start address 2hE(h
START OUT MSG(TERM) output data at address MSG G=dzP}B'WA
HLT halt execution :FyF:=
MSG ALF "MIXAL" azcPeAe
ALF " HELL" *Ak .KBg
ALF "O WOR" uOxHa>h
ALF "LD " +SJ.BmT
END START end of the program boh?Xt-$
R[WiW RfD
,Z.sGv
Nuva kc,"w\ ai
<..直接输出..> )P$(]{
Hello, world!
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So:X!ljN(e
<..或者..> <hT\xBb:
J~YT~D2L
<. >rnVTK
// 不带换行 yDWIflP0;
? "Hello, world!" Bqx5N"
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// 或者 ;C]Ufk
,d
G. 67
// 带换行 J[ds.~ $
?? 'Hello, world!' K^-1M?
.> H=dIZ
!Sq<_TO
h8rW"8Th
OCaml UA[`{rf
let main () = r8k (L{W
print_endline "Hello world!";; qsj{0 Go
Obdn#Wm=
W{p}N
Pascal ul{x|R
program Hello; 9tiZIm93]
begin UK`A:N2[
writeln('Hello, world!'); yzK;
end. TS<d?:
[K{{P|(q
>A#5` $i
Perl 9>}&dQ8
#!/usr/local/bin/perl lH-VqkR\
print "Hello, world!\n"; 8-$t7bV5
j50vPV8m
t;O)
PHP U>5^:%3
<?php %L|fTndKH
print("Hello, world!"); $ {yct
?> fv+]iK<{
oqrx7+0{
oOFTQB_6
Pike =~^b
#!/usr/local/bin/pike |}"YUk^
int main() XcR=4q|7
{ [-~pDkf:
write("Hello, world!\n"); L G}{ibB
return 0; 0cG'37[
} ]ua3I}_B6v
:;?$5h*|`
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PL/I Y&2FH/(M
Test: procedure options(main); J,W<ha*
declare My_String char(20) varying initialize('Hello, world!'); zAgX{$/Fg
put skip list(My_String); XM'tIE+|
end Test; A;AQw
\"P{8<h.3
LI,wSTVjC
Prolog +VwQ=[y]
goal fk*(8@u>
write("hello,world!"). 6?Ncgj
&@
r@G*Fx8Z
@]uqC~a^
Python 1U\ap{z@
#!/usr/local/bin/python =m.Nm -g
print "Hello, world!" )~2\4t4|g
RpdUR*K9x
eORXyh\K
REXX W"\~O"a
say "Hello, world!" y)kxR
@yp0WB
wt($trJ
Ruby /=2aD5r
#!/usr/bin/ruby NuZ2,<~9
print "Hello, world!\n" zB.cOMx
z/t|'8f
c~0kZA6
Scheme =<]`'15"V
(display "Hello, world!") 3W1Lh~Av
(newline) Ft5A(P >
d/_D|ivZ=
;|Cdq
sed (需要至少一行输入) sn"((BsO<
sed -ne '1s/.*/Hello, world!/p' y2W+YV*
N{J
1C6
o.Kn DY
Smalltalk D
e&,^"%
Transcript show: 'Hello, world!' <AgB"y@
MQ,K%_m8
~J\qkQ
SNOBOL kn3w6]
OUTPUT = "Hello, world!" N+&uR!:.C
END |E+.y&0;
$dM_uSt
>n7h%c
SQL St5;X&Q
create table MESSAGE (TEXT char(15)); mTe3%( LD
insert into MESSAGE (TEXT) values ('Hello, world!'); u\LNJo| B
select TEXT from MESSAGE; |5u~L#P
drop table MESSAGE; !MoAga_
j
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\,S|>CPQ
Tcl s;A7:_z#7
#!/usr/local/bin/tcl i1evB9FZ1z
puts "Hello, world!" kf@JEcKV
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qU26i"GHp
TScript [,Ehu<mEK
? "Hello, world!" eT
b!xb
!Yof%%m$;
ixA.b#!1
Turing .\_):j*
put "Hello, world!" py;p7y!gxA
V]|X
,G
EE9w^.3a
UNIX-style shell h,c*:
程序中的/bin/sh可改为您使用的shell sVx}(J
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#!/bin/sh
_X#R v2a
echo 'Hello, world!' Q`F1t
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GUI >YI Vi4''
0?54 8yH
Delphi L{1sYR%s\
program HelloWorld; [ar0{MPYd
uses 3sr_V~cZ9
Dialogs; <0d2{RQ;
begin g}MUfl-L
ShowMessage('Hello, World!'); w_{tS\
end. xM%4/QE+
M50I.Rd
z}E_wg
Nuva 9FDu{4:
<. uZ6krI
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) vM/*S
6[
.> mB-,\{)
m!7%5=Fc
^m z9sV
Visual Basic -rO34l
MsgBox "Hello, world!" t5{P'v9J
'或者 l5-[a
Print "Hello, world!" { b$"SIg1E
;M?)-dpZ
^}+\ 52w
Visual FoxPro @` KYgjjH
? "Hello, world!" f\_RW;y|m
r *K
ZA="Dac
X11 4]r_K2.cc
用一个程序 *I 1 H
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xmessage 'Hello, world!' :7K
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用C++和gtkmm 2 IQJ"B6U)
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#include <iostream> F'XQoZ* 1
#include <gtkmm/main.h> rxyv+@~Nc
#include <gtkmm/button.h> E`TZ:W]r,
#include <gtkmm/window.h> `O6#-<>
using namespace std; Dck/Ea
v_XN).f;
class HelloWorld : public Gtk::Window pX%:XpC!h
{ ZeV@ X
public: egu{}5
HelloWorld(); `4*I1WZW
virtual ~HelloWorld(); 3%*igpj\)
protected: )M0`dy{1
Gtk::Button m_button; =d8Rij-
virtual void on_button_clicked(); SXw r$)4_
}; $5pCfW8>
^
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HelloWorld::HelloWorld() : m_button("Hello, world!") TKnWhB/J
{ kx&JY9(
set_border_width(10); &m3-][!n
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); @V:K]M 5
add(m_button); QVjHGY*R
m_button.show(); }{F)Ren
} ;7\Fx8"s[
n~629 &
HelloWorld::~HelloWorld() {} qe.QF."y
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void HelloWorld::on_button_clicked() O_;BZzT
{ _&l8^MD
cout << "Hello, world!" << endl; e=9/3?El
} c~U0&V_`j
#czInXTTx
int main (int argc, char *argv[]) "-f]d~P>
{ /!ElAL
Gtk::Main kit(argc, argv); jgE{JK\n4
HelloWorld helloworld; ~m=GS[=
Gtk::Main::run(helloworld); GXZ="3W |
} \hX,z =
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k5< n:dS
Java P"NI> HM
import java.awt.*; <pk*z9
import java.awt.event.*; 5x@ U<
3X(^`lAf)
public class HelloFrame extends Frame j#f/M3
{ ^x&x|ckR!
HelloFrame(String title) DG;u_6;JR
{ =\]gL%N-|
super(title); D:9^^uVp
} .!~ysy
public void paint(Graphics g) ,P<I<QYu
{ p>)1Z<D"a
super.paint(g); DAq
H
java.awt.Insets ins = this.getInsets(); (~G*'/)
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); D&m1yl@\J
} OyDoktz$)
public static void main(String args []) 9-n]_AF`0
{ VQ!4(
<XD
HelloFrame fr = new HelloFrame("Hello"); ?e-rwaW
:vi %7
fr.addWindowListener( wp:$Tq a$
new WindowAdapter() u|23M,
{ Jha*BaD~N
public void windowClosing(WindowEvent e) ub 2'|CYw
{ m@nGXl'!
System.exit( 0 ); S*}GW-)oA
} "a(R>PV%
} ;2h"YU-b
); 07^.Z[(pCt
fr.setResizable(true); "^t7]=q
fr.setSize(500, 100); 3=]/+{B
fr.setVisible(true); /,7#%D
} w+rw<,u%
} 'NWvQR<X
yYOV:3!"
7#
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Java Applet ZHen:
Java Applet用于HTML文件。 gu3)HCZ
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HTML代码: 9^SrOW6~
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<HTML> Ct/6<
<HEAD> MS SHMR
<TITLE>Hello World</TITLE> KI<