“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。 Q.K,%(^;a
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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》。 N F)~W#
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以下是用不同语言写成的Hello World程序的几个例子: w$JvB5O
Ada H":oNpfb
with Ada.Text_Io; use Ada.Text_Io; 3R+|5Uq8~
procedure Hello is 2-Y<4'>
begin D!7`CH+
Put_Line ("Hello, world!"); 8M!:N(a
end Hello; (5]}5W*
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汇编语言 I`NjqyTW
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x86 CPU,DOS,TASM U&O:
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MODEL SMALL e7wSOs
IDEAL sr8cYLm5R
STACK 100H ]U"94S U:)
.W js~0c
DATASEG H;RwO@v
HW DB 'Hello, world!$' !47n[Zs
<[w=TdCPs
CODESEG #%DE;
MOV AX, @data -Uml_/rd_
MOV DS, AX -'6Dg
MOV DX, OFFSET HW yPq'( PV
MOV AH, 09H '-zD
INT 21H 82l~G;.n3
MOV AX, 4C00H Bve.C
INT 21H HTG%t/S
END ti
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=>-Rnc@
x86 CPU,GNU/Linux,NASM B_.%i+ZZ
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). -B +4+&{T
;Enter this into "hello.asm" then type: I_]^ .o1q
;"nasm -f elf hello.asm" nr<4M0tIp
;"ld hello.o -o hello" ]q4rlT.i
;"./hello" Dh=9Gns9
@;"|@!l|
section .data ;data section declaration E>K!Vrh-L
msg db 'Hello World!',0AH V:joFRH9
len equ $-msg ;string length {;2PL^i
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section .text ;code section declaration kGl~GOB
a
global _start ;entry point (start of execution) .[_L=_.
_start: mov edx,len ;string length Hj}K{20
mov ecx,msg ;string start 5 sX+~Q
mov ebx,1 ;file handle: stdout vam;4vyu
mov eax,4 ;sys_write 7' Mm205\
int 80h ;kernel system call
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mov ebx,0 ;return value vX.VfY
mov eax,1 ;sys_exit %KLpig
int 80h ;kernel system call T:~vk.Or
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:>5@cvc
x86 CPU,Windows,MASM32 q#%xro>m
.386 j:v@pzTD
.model flat,stdcall ZP(f3X@
option casemap:none uLV#SQ=bZN
;Include 文件定义 `x*Pof!Io
include windows.inc [TmIVQ!B
include user32.inc c24dSNJg,
includelib user32.lib U>Slc08N
include kernel32.inc g%=z_
includelib kernel32.lib iUN Ib
;数据段 qv!2MUw\j
.data Vh4X%b$TV
szCaption db 'A MessageBox!',0 BI%$c~wS
szText db 'Hello,world!',0 H:V2[y8\
;代码段 .:F%_dS D
.code 8]9%*2"!
start: ;>Ib^ov
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK @J/K-.r
invoke ExitProcess,NULL
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;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> "]}
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end start dl.p\t(1
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AWK fb e[@#:
BEGIN { print "Hello, world!" } MDn ua
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<<][hQs
BASIC |IzPgC
传统版BASIC(例如GWBASIC): 8<QdMkI
+ R~'7*EI
10 PRINT "Hello, world!" &OH={Au
20 END Fww :$^_ k
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或在提示符输入: NXrJfp
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?"Hello, world!":END uxr #QA
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现代版BASIC(例如Quick BASIC): a.k.n<
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Print "Hello, world!" },{$*f[
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以下的语句在Quick BASIC中同样有效: QTk}h_<u
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? "Hello,world!" GjvOM y
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BCPL 9y"@(
GET "LIBHDR" 0AL=S$B)
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LET START () BE |v3T!
$( v dc\R?
WRITES ("Hello, world!*N") gCB |DY
$)
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Sw ig;`
s"r*YlSp"
Befunge 8p 'L#Q.
"!dlrow olleH">v g}1B;zGf
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Brainfuck P@V0Mi),
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< rZ}:Z'`
+++++++++++++++.>.+++.------.--------.>+.>. &5B'nk"
2} /aFR
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C f<d`B]$(
#include <stdio.h> s<<ooycBrQ
];[}:f
int main(void) Z>k#n'm^z
{ yEqps3%
printf("Hello, world!\n"); $r@zs'N
return 0; E Nhl&J
} 98IJu
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t%/&c::(6
C++ JcsHt;
#include <iostream> Z&+ g;(g
c tZ uA+
int main() FrGgga$
{ hF~n)oQ
std::cout << "Hello, world!" << std::endl; \/r}]Vz
return 0; k8&;lgO'
} k<CJ{u0<
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C++/CLI ]8_NZHld
int main() 5H<m$K4z
{ 6
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System::Console::WriteLine("Hello, world!"); y}" O U
} l*Gvf_UH
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C# (C Sharp) %S960
class HelloWorldApp ZB=
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{ [Kg+^N%+
public static void Main() u&Yz[)+b=g
{ NvceYKp:
System.Console.WriteLine("Hello, world!"); S6Q
} -">;-3,K
} vxBgGl
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COBOL ~D j8z+^
IDENTIFICATION DIVISION. 'urafE4M
PROGRAM-ID. HELLO-WORLD. l` lk-nb
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ENVIRONMENT DIVISION. Cgk<pky1
y@S$^jk.
DATA DIVISION. U`(ee*}o
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PROCEDURE DIVISION. t%0VJB,Q2
DISPLAY "Hello, world!". {#vgtgBB
STOP RUN. y&$A+peJ1
gV's=cQ
s%7t"-=&
Common Lisp ~d.Y&b
(format t "Hello world!~%") ,wb:dj-
C2kPMB=Xo
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DOS批处理 )hsgC'H{~]
@echo off Ko<:Z)PS
echo "Hello, world!" TQF| a\M'
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D0-3eV-
Eiffel &-)N'
class HELLO_WORLD 0*3R=7_},o
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creation ]m3HF&
make AofKw
feature I5p?
[
make is R`qFg/S
local Qz1E 2yJ
io:BASIC_IO PO:{t
do UcHJR"M~c
!!io Rsm^Z!sn
io.put_string("%N Hello, world!") Vx u0F]%
end -- make tCH!my_
end -- class HELLO_WORLD L
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/hR&8 `\\
W:2( .?
Erlang $t[FH&c(
-module(hello). 9s
q
-export([hello_world/0]). z2~til
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hello_world() -> io:fwrite("Hello, World!\n"). kS);xA8s]
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Forth eu-*?]&Di
." Hello, world!" CR 0Th&iA4
P/eeC"
BL}\D;+t
Fortran Ynj,pl
WRITE(*,10) IHac:=*Q
10 FORMAT('Hello, World!') U?Zq6_M&
STOP :P~6~
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END 4xje$/_d
;A'mB6?%H
B~ GbF*j
HTML {%H'z$|{
<HTML> 5|s\*bV`
<HEAD> kgP0x-Ap
<TITLE> Hello World! </TITLE> L L~%f
&_
</HEAD> UB@+ck
<BODY> R
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<p>Hello World!</p> gR;i(81U
</BODY> hL{KRRf>
</HTML>
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H 0S!K{xyR
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O_7|C\]
INTERCAL S4z;7z(8+
PLEASE DO ,1 <- #13 %P|/A+Mg"
DO ,1 SUB #1 <- #238
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DO ,1 SUB #2 <- #112 hHnYtq
DO ,1 SUB #3 <- #112 {JMVV_}n
DO ,1 SUB #4 <- #0 on`3&0,.
DO ,1 SUB #5 <- #64 )3EY;
DO ,1 SUB #6 <- #238 2^nxoye
DO ,1 SUB #7 <- #26 @*((1(q
DO ,1 SUB #8 <- #248 oap4rHk}
DO ,1 SUB #9 <- #168 %IWPM"
DO ,1 SUB #10 <- #24 }K|oicpUg
DO ,1 SUB #11 <- #16 p<"m[Dt]
DO ,1 SUB #12 <- #158 X
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DO ,1 SUB #13 <- #52 kt:!
7
PLEASE READ OUT ,1 eeB{c.#
PLEASE GIVE UP %7+qnH*;r
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eng'X-x
Java +23xev
public class Hello jNk%OrP]
{ L4nYXW0y
public static void main(String[] args) wbl&
{ pW3^X=6
System.out.println("Hello, world!"); 6j}9V
L77
} 4,DeHJjAlE
} t b}V5VH
}.6[qk
( a#BV}=
JSP v.qrz"98-
<% &tj!*k'
out.print("Hello, world!"); 4.t-i5
%> ^ [@,
Ysv"
6b}
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MIXAL Gk6iIK
TERM EQU 19 the MIX console device number >z@0.pN]7
ORIG 1000 start address jse&DQ
START OUT MSG(TERM) output data at address MSG S)@j6(HC4
HLT halt execution 5r^(P
MSG ALF "MIXAL" Cw&KVw*
ALF " HELL" H qx-;F~0
ALF "O WOR" xJ.M;SF4
ALF "LD " nBYZ}L q
END START end of the program 0</);g}
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Nuva Zj'9rXhrM1
<..直接输出..>
Z *x'+X
Hello, world! j0q&&9/Jj
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<..或者..> 3u0RKLc\
l.M0`Cn-%
<. U 6)#}
// 不带换行 h/Y'<:
? "Hello, world!" LrpM\}t
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// 或者 1?l1:}^L
SOIN']L|V[
// 带换行 do'GlU oMC
?? 'Hello, world!' 'LDQgC*%
.> \s\?l(ooq"
4 #Jg9o
A@#E@;lm
OCaml =7UsVn#o
let main () = J#83 0r(-
print_endline "Hello world!";; cFX p
GTHt'[t@;
$%f&a3#
Pascal ~a2}(]
program Hello; 5[0?g@aO
begin w,D+j74e$
writeln('Hello, world!'); j1<Yg,_.p
end. E!F^H^~$8
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P.DK0VgY
Perl #AY&BWS$
#!/usr/local/bin/perl gjlx~.0d
print "Hello, world!\n"; !5!<C,U
{{!-Gr
~"A0Rs=
PHP r9XZ(0/p
<?php s5.CFA
print("Hello, world!"); *0ro0Z|Iq
?> 6!bsM"F
#<xm.
^<6[.)
Pike gRzxLf`K
#!/usr/local/bin/pike VIbq:U
int main() o4WDh@d5S
{ N2o7%gJw
write("Hello, world!\n"); /gas2k==^
return 0; f6p/5]=J26
} dc'Y`e
izR"+v
-nwypu
PL/I F"mmLao
Test: procedure options(main); lEBLZ}}\
declare My_String char(20) varying initialize('Hello, world!'); |uJ%5y#
put skip list(My_String); !()Qm,1u
end Test; ;9#KeA _
J .<F"r>
1\.pMHv/
Prolog ?V=CB,^
goal Iu6
write("hello,world!"). !
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1Z&(6cDY8M
TcoB,Kdce
Python glw+l'@
#!/usr/local/bin/python Ho]su?
print "Hello, world!" ,]D,P
w!XD/jN
=EsavN
REXX \{YU wKK/A
say "Hello, world!" s#GLJl\E_P
_e2=ado
}-`4DHgq
Ruby G+m }MOQP7
#!/usr/bin/ruby MqMQtU9w
print "Hello, world!\n" z(~_AN M4,
u1.BN>G
2&5K.Ui%
Scheme H,NF;QPPC
(display "Hello, world!") rT>wg1:
(newline) Alq(QDs
@}ZVtrz
6dYMwMH
sed (需要至少一行输入) "Y.y:Vv;
sed -ne '1s/.*/Hello, world!/p' p
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R|Q?KCI&
8?C5L8)
Smalltalk 47B&s
Transcript show: 'Hello, world!' 5-A\9UC*@
&nK<:^n
./~(7o$
SNOBOL y_[vr:s5pG
OUTPUT = "Hello, world!" ")25
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END WY]s |2a
c*M}N?|6
8b=_Y;
SQL *lb<$E]="!
create table MESSAGE (TEXT char(15)); Q59W#e)
insert into MESSAGE (TEXT) values ('Hello, world!'); D&zle~" J
select TEXT from MESSAGE; F:ELPs4"
drop table MESSAGE; )pn3~t<ed
T]$U""
A %-6`>
Tcl Qwc"[N4H
#!/usr/local/bin/tcl ?h2}#wg
puts "Hello, world!" 8;X-)&R
zBH2@d3W
WEpoBP
CL
TScript V43H/hl
? "Hello, world!" )`}:8y?
aQ~s`^D
xN(|A}w
Turing wA.\i
put "Hello, world!" MO]&bHH7;
nj4/#W
dqAw5[qMJ
UNIX-style shell h`wD
程序中的/bin/sh可改为您使用的shell BerwI
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#!/bin/sh tMe ~vq[
echo 'Hello, world!' QS j]ZA
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%>s|j'{
GUI azU"G(6y?+
rLT!To
Delphi O
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program HelloWorld; =w^M{W.w
uses S[QrS7
Dialogs; E)3NxmM#
begin )}ROLe
ShowMessage('Hello, World!'); (iGTACoF
end. ~{gqsuCCL
zMJT:7*`|
B1Oq!k
Nuva |'2d_vR
<. BORA(,
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) LHmZxi?
.> <6=c,y
C.QO#b
~;] d"'
Visual Basic 9ll~~zF99|
MsgBox "Hello, world!" "ITIhnE
'或者 5(8@%6>ruj
Print "Hello, world!" Ct|A:/z(
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'H!XUtFs"
Visual FoxPro FgI3
? "Hello, world!" l+0P
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/Q )\ +
X11 j~QwV='S
用一个程序 A(N4N
\di=
xmessage 'Hello, world!' XZwK6F)L
c"xK`%e
用C++和gtkmm 2 \(T/O~b2
,=N.FS
#include <iostream> Xm2'6f,
#include <gtkmm/main.h> HorDNRyu
#include <gtkmm/button.h> p<;0g9,1
#include <gtkmm/window.h> #D|p2L$
using namespace std; |)G<,FJQE_
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)
class HelloWorld : public Gtk::Window %07SFu#
{ l@:0e]8|o
public: V1JIht>Opo
HelloWorld(); .{KVMc
virtual ~HelloWorld(); Lh<).<S
protected: 6 aV_@no.C
Gtk::Button m_button; hpJ-r
virtual void on_button_clicked(); 3k?X-|O8AZ
}; {}x^ri~
-!9G0h&i|
HelloWorld::HelloWorld() : m_button("Hello, world!") Mc}^LDX
{ bJ;'`sw1
set_border_width(10); llsfTrp
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); *\q
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add(m_button); MJrR[h]
m_button.show(); YAmb`CP
} >"<Wjr8W!$
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HelloWorld::~HelloWorld() {} k$7Jj-+~
{}Za_(Y,]
void HelloWorld::on_button_clicked() y)gKxRaCS
{ [c06 N$:
cout << "Hello, world!" << endl; F}qc0
} Hq 188<
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int main (int argc, char *argv[])
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{ +2j AC r
Gtk::Main kit(argc, argv); BF <ikilR
HelloWorld helloworld; {qMIGwu
Gtk::Main::run(helloworld); !?gKqx'T$
} k#rBB
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Java 1sH&
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import java.awt.*; V$?SR44>nH
import java.awt.event.*; 8&aq/4:q0
J)C/u{o
public class HelloFrame extends Frame K96<M);:g
{ !0cD$^7
HelloFrame(String title) "-J-k=
{ ?I@W:#>o
super(title); ,4oo=&
} bY0|N[g
public void paint(Graphics g) pV"R|{#V
{ N8FF3}>
g
super.paint(g); @|%2f@h
java.awt.Insets ins = this.getInsets(); #lW`{i
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); Wiu"k%Qsh
} &JI8]JmU)
public static void main(String args []) (J!+(H8
{ :4%k9BGAj"
HelloFrame fr = new HelloFrame("Hello"); 7Rt9od<
)!
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fr.addWindowListener( aAA U{EWW
new WindowAdapter() 5[u]E~Fl}
{ 9
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public void windowClosing(WindowEvent e) 9p2&)kb6
{ /~f'}]W
System.exit( 0 ); J6aef^>
} %- 0t?/>
} 7x4PaX(
); qeZ? 7#Gf
fr.setResizable(true); 5N&?KA-
fr.setSize(500, 100); xX4N4vb
fr.setVisible(true); >s?S+W[L
} p"ZG%Ow5Q]
} MFAH%Z$
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e;}7G
Java Applet K&K