“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。 ;yH>A ;,K%
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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》。 ycGY5t@K@
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以下是用不同语言写成的Hello World程序的几个例子: AZ:7_4jz
Ada {%jAp11y+O
with Ada.Text_Io; use Ada.Text_Io; ~% hdy@
procedure Hello is ~W'DEpq_
begin GR,2^]<{
Put_Line ("Hello, world!"); <H[w0Z$
end Hello; + a#&W}K
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汇编语言 LPs%^*8(2
,n|si#
x86 CPU,DOS,TASM zal]t$z>
MODEL SMALL dQX-s=XJ
IDEAL $m`Dyu
STACK 100H zcpL[@B
Sn:>|y~
DATASEG $C16}^
HW DB 'Hello, world!$' J_s`G
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CODESEG .5JIQWE(
MOV AX, @data ZvY"yl?e
MOV DS, AX OjU{r N*
MOV DX, OFFSET HW V:0IBbh)w
MOV AH, 09H ^`H'LD
INT 21H gt4GN`-k
MOV AX, 4C00H oRfb4+H&
INT 21H *i#2>=)
END :J;U~emq
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x86 CPU,GNU/Linux,NASM DJ ru|2
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). +h)"m/mE
;Enter this into "hello.asm" then type: X[z;P!U
;"nasm -f elf hello.asm" j/v>,MM
;"ld hello.o -o hello" *oO%+6nL
;"./hello" Z;+,hR ((
\Y#
section .data ;data section declaration 3Vu}D(PJ
msg db 'Hello World!',0AH ]4rmQAS7"
len equ $-msg ;string length 92-Xz6Bo9
mR}8} K]L
section .text ;code section declaration Aez2n(yac
global _start ;entry point (start of execution) %Z;RY5
_start: mov edx,len ;string length ;NP-tA)
mov ecx,msg ;string start z$<=8ox8e
mov ebx,1 ;file handle: stdout H UJqB0D
?
mov eax,4 ;sys_write mQj# \<*
int 80h ;kernel system call +=WBH'
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mov ebx,0 ;return value ueg%yvO
mov eax,1 ;sys_exit r$<!?Z
int 80h ;kernel system call 6O4*OR<&
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piIZ*@'
x86 CPU,Windows,MASM32 Q}#4Qz~n
.386 I!zoo[/)%
.model flat,stdcall 5%'ybh)@
option casemap:none WO>A55Xya
;Include 文件定义 '{`KYKLP+
include windows.inc ?MDo. z3
include user32.inc Ehy(;n)\
includelib user32.lib BDt$s(
\
include kernel32.inc (JU8F-/9
includelib kernel32.lib .)*&NY!nsl
;数据段 zkt~[-jm}
.data 1dD%a91
szCaption db 'A MessageBox!',0 N\|B06X
szText db 'Hello,world!',0 #m#IBRD :
;代码段 HOD?i_
.code )~M@2;@L
start: gd[muR ~
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 4n#u?)
invoke ExitProcess,NULL &4E|c[HN
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> X&Oo[Z
end start Tp ;W
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BEGIN { print "Hello, world!" } R14&V1 tZ
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BASIC ln<[CgV8
传统版BASIC(例如GWBASIC): l|842N@1
8y<mHJ[B
10 PRINT "Hello, world!" padV|hF3(e
20 END .0nT*LF
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或在提示符输入: QAI=nrlp
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?"Hello, world!":END M5[#YG'FlQ
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现代版BASIC(例如Quick BASIC): ,%Pn.E* r;
02 FLe*zQ
Print "Hello, world!" .}E<,T
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以下的语句在Quick BASIC中同样有效: qV=O;
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? "Hello,world!" ; 8VZsh
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"-fyX!
BCPL [3irr0D7l
GET "LIBHDR" D _\HX9
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LET START () BE jKP75jm
$( w8>lWgN
WRITES ("Hello, world!*N") W9Us I
$) n n[idw
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Befunge wQ-BY"cK\
"!dlrow olleH">v X"8$,\wX,
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Brainfuck :U1V 2f'l3
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ( ^=kV?<
+++++++++++++++.>.+++.------.--------.>+.>. 7Aw <:
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#include <stdio.h> TDtHRhq7
qztL M?iV
int main(void) */]1?M@P)
{ BZQJ@lk5
printf("Hello, world!\n"); >03JQe_#*L
return 0; fQU_A
} ZDrTPnA[
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C++ 5OFb9YX
#include <iostream> _i"[m(ABj1
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int main() . Vq_O
u
{ `O=LQ m`
std::cout << "Hello, world!" << std::endl; Z=?qf$.}
return 0; "%t !+E>nr
} (7aE!r\Ab
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C++/CLI %8L5uMx
int main() Y0OVzp9 b
{ XG6UV('
System::Console::WriteLine("Hello, world!"); -E!V;Tgc%U
} ;/nR[sibN
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C# (C Sharp) hmd, g>J:<
class HelloWorldApp
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{ fm% Y*<Y"
public static void Main() ~oBSf+N
{ )6zwprH!
System.Console.WriteLine("Hello, world!"); 4fzM%ku
} ~&IL>2-B
} u"n~9!G
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:!EOg4%i
COBOL 6{I5 23g
IDENTIFICATION DIVISION. CD0SXNi"zH
PROGRAM-ID. HELLO-WORLD. A&0sD}I\K
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ENVIRONMENT DIVISION. kR-5RaW
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DATA DIVISION. 86@@j*c(@k
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PROCEDURE DIVISION. 5B(r[Ni
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DISPLAY "Hello, world!". L7*~8Y
STOP RUN. Z-j%``I?h
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Common Lisp #6JCm!s
(format t "Hello world!~%") 1<qq6 9x
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/T*]RO4%>]
DOS批处理 jX{lo
@echo off )P.|Xk:r
echo "Hello, world!" Wcn^IQ
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'gE_xn7j
Eiffel fD|ox
class HELLO_WORLD W"WvkW>-
>[Q(!Ai
creation _W*3FH
make #tBbvs+%
feature 4//Ww6W:
make is i@_|18F]`
local s\Cl3
io:BASIC_IO J74nAC%J^
do J]|-.Wv1
!!io c{#lKD<7
io.put_string("%N Hello, world!") -]PW\}w1
end -- make <
v_ ?}
end -- class HELLO_WORLD Ty]CdyL$
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`)H.TMI
Erlang Z!|nc.
-module(hello). ;mo}$^49*
-export([hello_world/0]). K#";!
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hello_world() -> io:fwrite("Hello, World!\n"). .'7o,)pJ<
z/rN+ ,
TiF$',WMv
Forth sbNCviKP
." Hello, world!" CR k2*^W&Z
M6|Q~8$
/5r[M=_ihr
Fortran .6OE8w
1
WRITE(*,10) 8X*6i-j5E
10 FORMAT('Hello, World!') A"z')
STOP OjeM#s#N!
END >&U]j*'4
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HTML )X| uOg&|
<HTML> 0V srAV0
<HEAD> uu=e~K
<TITLE> Hello World! </TITLE> /k}vm3
</HEAD> R0\E?9P
<BODY> D
7H$!(F>
<p>Hello World!</p> Ql\{^s+
</BODY> N9:xtrJ]_J
</HTML> Z:9"7^+
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bv$)^
)0RH"#,2L
INTERCAL /o![%&-l
PLEASE DO ,1 <- #13 `;4zIBJ
DO ,1 SUB #1 <- #238 -Vt*(L
DO ,1 SUB #2 <- #112 ;9 XM
s)
DO ,1 SUB #3 <- #112 ^^)D!I"cA,
DO ,1 SUB #4 <- #0 =QOtag1;
DO ,1 SUB #5 <- #64 )MW.Y
DO ,1 SUB #6 <- #238 SukRJvi
DO ,1 SUB #7 <- #26 eH=lX9
DO ,1 SUB #8 <- #248 $0sUh]7y
DO ,1 SUB #9 <- #168 +vBq,'k`
DO ,1 SUB #10 <- #24 0D:J d6\
DO ,1 SUB #11 <- #16 j$A~3O<e"
DO ,1 SUB #12 <- #158 O\B_=KWDO
DO ,1 SUB #13 <- #52 *)U=ZO6S
PLEASE READ OUT ,1 `gD'q5.z;3
PLEASE GIVE UP xAQ=oF
+
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z9YC9m)jK
Java |zGwt Z
public class Hello B {f&'1pp/
{ 7oh6G
public static void main(String[] args) u0#q)L8
{ .z7F58
System.out.println("Hello, world!"); ;0P2nc:U~
} mn?<
Zz
} G;qC&7T
^zO%O653
kdITh9nx<r
JSP [^P25K
<% [9~Bau
out.print("Hello, world!"); ,cYU
%> {SbA(a?B
8@|+-)t
9L]x9lI;
MIXAL ShxB!/s
TERM EQU 19 the MIX console device number x'+lNlv
ORIG 1000 start address `<8~tS/. w
START OUT MSG(TERM) output data at address MSG uK="#1z cC
HLT halt execution E@7";&\-8
MSG ALF "MIXAL" @w[WG:-+
ALF " HELL" $A9!} `V
ALF "O WOR" wtndXhVC4>
ALF "LD " 's8NO
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END START end of the program #|
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Nuva nMNAn}~*M
<..直接输出..> WhMr'l/e
Hello, world! !r,ZyJU
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<..或者..> 7,d^?.~S
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<. |g}!
F-
// 不带换行 P)XkqOGpT9
? "Hello, world!" Hz`rw\\Xq
xV:.)Dq9
// 或者 p)(mF"\8=
- (VV
// 带换行 :=UiEDN@
?? 'Hello, world!' K8$Hg:Ky-/
.> !Ui3}
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OCaml 9TjAEeU
let main () = 0cC5
print_endline "Hello world!";; hY7Q$B<
|Vs|&0
OY*BVJ^
Pascal Uq 2Uv
program Hello; +[V[{n
begin su<_?'uH
writeln('Hello, world!'); y@ J\h8_
end.
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;'{:}K=h
Perl C"PN3>x}j
#!/usr/local/bin/perl {c<MB xk
print "Hello, world!\n"; #m1e_[
!T@>Ld:
%L+/GtxK
PHP DKqFe5rw
<?php v)N8vFdd
print("Hello, world!"); +V4BJ/H
?> 12])``9
Ih!UL:Ckh
BP6;dF5E
Pike l"p%]\tZ
#!/usr/local/bin/pike s/0-DHd
int main() '\H {Y[
{ 1wmS?
write("Hello, world!\n"); dt{|bQLu3
return 0; ,miU'<8tQ|
} W%hdS<b
G1
%c<1Y
^ ]SS\=7
PL/I 3!`Pv ?|o
Test: procedure options(main); di]z
declare My_String char(20) varying initialize('Hello, world!'); r.**
z j
put skip list(My_String); .!RBhLH_g
end Test; Vj_(55WQ
d*khda;Vj
B++.tQ=X.
Prolog S,fMGKcq
goal 8kXbyKX[b
write("hello,world!"). *E+2E^B
qEX2K^y'4"
- y{*U1[
Python Y}7'OM
#!/usr/local/bin/python h']RP
print "Hello, world!" ag]b]K
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kXzm
REXX #R4Mv(BG
say "Hello, world!" p/
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H[@uE*W
MB"uJUk
Ruby A9qCaq{
#!/usr/bin/ruby J0a]Wz%
print "Hello, world!\n" C6,GgDH`
bITOA
"5 PP<A,F(
Scheme ^ 'FC.
(display "Hello, world!") q#LwM]<.@>
(newline) t1b$,jHmKl
|Yh-`~~A"
#x1AZwC
sed (需要至少一行输入) V.)y7B
sed -ne '1s/.*/Hello, world!/p' v]F q}I"
+ L;[-]E8
zT#36+_?
Smalltalk "h_]it};C
Transcript show: 'Hello, world!' !H{)L@f
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gGw6c" FRQ
SNOBOL bW;0E%_
OUTPUT = "Hello, world!" leiED'
END ;!, ]}2w*X
bR?-B>EB
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SQL 7loCb4Hv
create table MESSAGE (TEXT char(15)); v\rOs+.s
insert into MESSAGE (TEXT) values ('Hello, world!'); Qc;`nck
select TEXT from MESSAGE; GsqR8n=
drop table MESSAGE; rtvuAFiH
bv9\Jp0c
JmrQDO_(
Tcl n}
GIf&
#!/usr/local/bin/tcl T~s/@*y9
puts "Hello, world!" VxjEKc
E87/B%R
ZB:Fjq
TScript -?e~dLu
? "Hello, world!" M~I M;my
LnZ*,>1Z
q?[{fcNh$
Turing G(JvAe]r
put "Hello, world!" e~$MIHBY]
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UNIX-style shell eG|e1t K+
程序中的/bin/sh可改为您使用的shell KZ ?<&x
&|%z!x6 f
#!/bin/sh 5U|f"3&8
echo 'Hello, world!' +
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GUI hOfd<k\A
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Delphi ]j*o&6cQf
program HelloWorld; 2-o,4EfHVO
uses 1k2Ck
Dialogs; rNU,(htS
begin A&$!s)8z
ShowMessage('Hello, World!'); PHfGl
end. $msT,$NJ
uP|AP
oVoTnGNM6
Nuva j0=`Jf
<. R{!s%K&
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) jV:U%
.> L$ ]D&f8:
m f4@g05
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Visual Basic z9h`sY~
MsgBox "Hello, world!" KPW: r#d
'或者 iA^w2K
Print "Hello, world!" lxbbyy25
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Visual FoxPro .
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? "Hello, world!" 8x58sOR=
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X11 8Y5*
1E*
用一个程序 (4M# (I~cE
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xmessage 'Hello, world!' T:;e 73
(d#?\
用C++和gtkmm 2 1)u=&t,
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#include <iostream> 5uDQ*nJ|
#include <gtkmm/main.h> =C`v+NPM)|
#include <gtkmm/button.h> EHzU`('?[
#include <gtkmm/window.h> g^B6NF
using namespace std; $23="Jcl
iY;)R|6
class HelloWorld : public Gtk::Window Ao{wd1
{ Oo7n_h1
public: 6K`frt
HelloWorld(); K<|b>PI.s
virtual ~HelloWorld(); gkBat(Uc
protected: +"'h?7'C
Gtk::Button m_button; ?[XH`c,
virtual void on_button_clicked();
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[.bS
}; "<!|am(
&]#D`u
HelloWorld::HelloWorld() : m_button("Hello, world!") } k5pfz
{ L x9`y t6
set_border_width(10); SvI
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); OmU.9PDg-
add(m_button); b?w4Nx#
m_button.show(); +pf 7
} /eIwv31
)}paQmy#
HelloWorld::~HelloWorld() {} c:=Z<0S;
i&_sbQ^
void HelloWorld::on_button_clicked() X-n'?=
{ u=ENf1{ $>
cout << "Hello, world!" << endl; !>>$'.nb@~
} [fO]oTh
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int main (int argc, char *argv[]) g1&GX(4[
{ 60`y= !?f
Gtk::Main kit(argc, argv); Qz<v. _
HelloWorld helloworld; j5$Sm
Gtk::Main::run(helloworld); (5Cm+Sy
} w7dG=a&
i ;X'1TN(y
;|
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Java Nb B`6@r
import java.awt.*; c&'T By
import java.awt.event.*; zH|!O!3"4
JNMZn/
public class HelloFrame extends Frame {a(YV\^y|H
{ 0|4XV{\qT$
HelloFrame(String title) 6'qs=Ql
{ Rjh/M`|
super(title); C9bf1ddCW&
} V$:v~*Y9
public void paint(Graphics g) C:P, q6
{ '<XG@L
super.paint(g); e%UFY-2
java.awt.Insets ins = this.getInsets(); I^lb;3uR
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); F'`L~!F
} }dB01Jl
'
public static void main(String args []) (?J&Ar0
{ _jnH!Mw
HelloFrame fr = new HelloFrame("Hello"); eb+[=nmP
gy* N)iv%
fr.addWindowListener( %X#Wc:b
new WindowAdapter() HYpB]<F
{ >i`'e~%
public void windowClosing(WindowEvent e) Kb4u)~S:
{ pT[C[h:
System.exit( 0 ); >gVR5o
} x2K.5q>
} ~0worI?
); <L5[#V_
fr.setResizable(true); 2Uk$9s
fr.setSize(500, 100); 0~^opNR
fr.setVisible(true); =zI
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} v( (fRX.`
} m2VF}%
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qFvtqv2
L! Q&?xP
Java Applet }{9E~"_[
Java Applet用于HTML文件。 qW7S<ouh
uZW1
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HTML代码: zf2]|]*xz
6K*7%8Y/G
<HTML> i}M&1E
<HEAD> ^$yr-p%-
<TITLE>Hello World</TITLE> Ku&0bXP
</HEAD> }4ta#T Ea
<BODY> )LH nDx
xB
4A"|
HelloWorld Program says: O2A Z|[*I
n_?<q{GW
<APPLET CODE="HelloWorld.class" WIDTH=600 HEIGHT=100> ly6?jVJ
</APPLET> 875V{fvPBU
xOD;pRZQ
</BODY> >#c]rk:
</HTML> Dth<hS,2J
b6oPnP_3P
Java代码: l=bB,7gL
\+S~N:@><k
import java.applet.*; %VSST?aUvX
import java.awt.*; t</Kel|D
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