“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。 d~hN`ff
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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》。 AJJa<c+j
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以下是用不同语言写成的Hello World程序的几个例子: c04;2gR
Ada G*y!
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with Ada.Text_Io; use Ada.Text_Io; 50E?K!
procedure Hello is l>t0 H($
begin 8mh@C6U
Put_Line ("Hello, world!"); .,l4pA9v
end Hello; J]-z7<j']
B3';Tcs
U)sw
Iis E
汇编语言 %@,!
(
8aMmz!S
x86 CPU,DOS,TASM cxig <W
MODEL SMALL
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IDEAL @
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STACK 100H E&_q"jJRi
?cvV~&$gc
DATASEG mzGMYi*
HW DB 'Hello, world!$' 0nu&JQ
b;2[E/JKB
CODESEG Hl*V i3bQU
MOV AX, @data -(FhjIr
MOV DS, AX n@PXC8}
MOV DX, OFFSET HW `P43O gA
MOV AH, 09H />0
Bm`A
INT 21H >U9JbkeF
MOV AX, 4C00H "?n;dXYSi
INT 21H +YFA Zv7`
END cAQ_/>
Vm8rQFCp74
=3H*%
x86 CPU,GNU/Linux,NASM $p)e.ZMgE
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). \;FE@
;Enter this into "hello.asm" then type: pH/_C0e`7
;"nasm -f elf hello.asm" 8bf~uHAr
;"ld hello.o -o hello" ^U.t5jj
;"./hello" :RG=3T[
']__V[
section .data ;data section declaration G|eJac>
msg db 'Hello World!',0AH G5T(
len equ $-msg ;string length
$*S&i(z
9Z^\b)x
section .text ;code section declaration &VdKL2
global _start ;entry point (start of execution) QP~Iz*J'
_start: mov edx,len ;string length IA3m.Vxj ^
mov ecx,msg ;string start M/5+AsT
mov ebx,1 ;file handle: stdout }J0HEpn4
mov eax,4 ;sys_write VTl\'>(Cl
int 80h ;kernel system call ]ddTHl
MD+e!A# o
mov ebx,0 ;return value HbZFL*2x3
mov eax,1 ;sys_exit y8Oz4|
int 80h ;kernel system call Kj/{V
]q":ta!f
sD{d8s[(
x86 CPU,Windows,MASM32 ,w|Or}h]7
.386 x4Wu`-4^
.model flat,stdcall wN2D{Jj
option casemap:none 9lR-
;Include 文件定义 A2p]BW&
include windows.inc ?C`&*+
include user32.inc "*HVL
includelib user32.lib ["~T)d'
include kernel32.inc 3'xmq
includelib kernel32.lib [;LP6n7v
;数据段 Lz:Q6
.data N;|:Ks#!
szCaption db 'A MessageBox!',0 kVY0
E
szText db 'Hello,world!',0 *Kmo1>^
;代码段 tpj6AMO/`d
.code `s|^
start: ~(P\'H&(h
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK &S9O:>=*
invoke ExitProcess,NULL pp1kcrE\M
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> \}EJtux q
end start q!Q*T^-rO
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AWK R^Y>v5jAe
BEGIN { print "Hello, world!" } F [S'l
n h&[e
CSVL,(Uw
BASIC Mq Q'Kjo
传统版BASIC(例如GWBASIC): 2=`}:&0l
t+IrQf,P[
10 PRINT "Hello, world!" 3(
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20 END E!
mxa
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或在提示符输入: #QM9!k@9k
=j^wa')
?"Hello, world!":END #``Alh8
g=Bge)
现代版BASIC(例如Quick BASIC): y*vg9`$k
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Print "Hello, world!" rvRIKc|}l
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以下的语句在Quick BASIC中同样有效: v%4zP%4Ak[
[ n2)6B\/
? "Hello,world!" 4Pkl()\c
:} N;OS _
dCO7"/IHW
BCPL >7(7
GET "LIBHDR" .-?Txkwb
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LET START () BE yGE)EBH
$( 3!Ca b/T
WRITES ("Hello, world!*N") &2//\Qz
$) SS7C|*-Zd
$m[*)0/
5-.{RU=
Befunge U`kO<ztk
"!dlrow olleH">v gI{56Z
, Ur,{ZGm
^_@ "Ax#x
p.RSH$]
wY{!gQ
Brainfuck 6>F1!Q
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< miEf<<L#z
+++++++++++++++.>.+++.------.--------.>+.>. (&oT6Ji
*zl-R*bM$
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C 9HG" }CGZP
#include <stdio.h> l*]nvd_
3}x6IM2
int main(void) $&KiN82,
{ M <ccfU!
printf("Hello, world!\n"); >gZ"^iW
return 0; o!sHK9hvJ)
} TSKR~3D#
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5@yBUwMSj
C++ >e^8fpgSo
#include <iostream> ,.TwM;w=
#)z7&nD
int main() #/o1D^
{ G&@vTcF
std::cout << "Hello, world!" << std::endl; Q|tzA10E
return 0; :,pdR>q%(y
} jM;?);Dd
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ucX!6)Op
C++/CLI ~NZ}@J{00_
int main() QR(j7>+J^
{ <~P([5
System::Console::WriteLine("Hello, world!"); 3Ss)i7
} OJ,Z
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Tk:%YS;=
C# (C Sharp) ~NBlJULS
class HelloWorldApp #waK^B)<a
{ f (ug3(j
public static void Main() =:(<lKf,<F
{ Azag*M?
System.Console.WriteLine("Hello, world!"); G[s/M\l
} 4{#0ci{
} -|(
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z]n&,q,5g
9B2`FJ
COBOL s,]z6L0
IDENTIFICATION DIVISION. +9]CGYj
PROGRAM-ID. HELLO-WORLD. r)Fd3)e
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ENVIRONMENT DIVISION. g7O,
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.7r$jmuFs
DATA DIVISION. B5MEE
F?hGt]o
PROCEDURE DIVISION. 2/RW( U
DISPLAY "Hello, world!". zD):
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STOP RUN. \5R>+[n!
^/"2s}+
e\WG-zi/
Common Lisp W0s3nio
(format t "Hello world!~%") p^U#1c
aT}?-CUxx
_v +At;Y
DOS批处理 a.B<W9$`
@echo off {z*`*
O@
echo "Hello, world!" BTa#}LBZ+
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N7}yU~j^
Eiffel 'jjJ[16"d
class HELLO_WORLD dY'>'1>P
9
}(v <f*7=n
creation S'(Hl}h!.
make S\W&{+3
feature c*Q6k<SKR
make is apd"p{
local 8npjQ;%4>
io:BASIC_IO 5gH'CzU?
do
m"tke'a
!!io %tZ[wwt
io.put_string("%N Hello, world!") ;7bY>zc(w
end -- make /*hS0xN*
end -- class HELLO_WORLD 7,,#f&jP
~_W>ND
Jec<1|
Erlang 'Z`fZ5q
-module(hello). _VI3b$
-export([hello_world/0]). p5 )+R/
)ioIn`g^-
hello_world() -> io:fwrite("Hello, World!\n"). fhbILg
D0@d}N
]R6Z(^XT,E
Forth vH/Y]Am
." Hello, world!" CR O*-sSf
A:YWXcg
<PTi>C8;r
Fortran g].v
WRITE(*,10) Mp)|5<%
10 FORMAT('Hello, World!') uW^ W/S%'
STOP |
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END ,7*-%05[\
) kK" 1\m
Ps9YP B-
HTML Wkc^?0p
<HTML> VO+3@d:
<HEAD> hSfLNvK
<TITLE> Hello World! </TITLE> C^!ej"
</HEAD> E K#ib
<BODY> ^9xsbv
B0
<p>Hello World!</p> 8`;3`lZ
</BODY> -[-Ry6G
</HTML> &$hT27A>k
u}BN)%`B
hP26 Bb1
HQ9+ atWB*kqI
H Z=CY6Zu7
C;.+ kE
S[L2vM)
INTERCAL d&5GkD.P
PLEASE DO ,1 <- #13 B)L;ja
DO ,1 SUB #1 <- #238 Dd$CN&Ca
DO ,1 SUB #2 <- #112 kU$M 8J.
DO ,1 SUB #3 <- #112 TM?7F2
DO ,1 SUB #4 <- #0 AlQ
DO ,1 SUB #5 <- #64 4Q
FX
DO ,1 SUB #6 <- #238 8I|2yvhP
DO ,1 SUB #7 <- #26 =OU]<%
DO ,1 SUB #8 <- #248 NJTC+`Hm
DO ,1 SUB #9 <- #168 PbN"+q M
DO ,1 SUB #10 <- #24 8GFA}_(^R
DO ,1 SUB #11 <- #16 >" z&KZKI
DO ,1 SUB #12 <- #158 ufWd)Q
DO ,1 SUB #13 <- #52 5,1q%
PLEASE READ OUT ,1 .3*VkAs
PLEASE GIVE UP kFF)6z:2
."\&;:ZNv
HOY9{>E}z
Java ~TEKxgU
public class Hello Je~d/,^WU
{ 1F_ 1bAh$
public static void main(String[] args) |`yzH$,F
{ %Jc>joU
System.out.println("Hello, world!"); k1
} J((.zLvz
} H<6/i@ly
@YfCS8
eH
(G:K?o)
JSP WxFrqUz
<% L?5OWVX!v
out.print("Hello, world!"); !.ot&EbE
%> wf8GH}2A
q$=EUB"C
&]2z)&a
MIXAL !B_?_ a
TERM EQU 19 the MIX console device number jW-j+WGSM
ORIG 1000 start address %Pb 5PIk4
START OUT MSG(TERM) output data at address MSG
n|oAfJUk,
HLT halt execution Eb<iR)e H=
MSG ALF "MIXAL" Sh_ =dzM
ALF " HELL" OgTE^W@
ALF "O WOR" S6sw)
ALF "LD " \KaWR
END START end of the program Q(2X$7iRq
&)p/cOiV
hL,+wJ+A
Nuva D~xUr)E
<..直接输出..> *QF3l0&
Hello, world! 0Up@+R2
G/Xa`4"_
<..或者..> 2\z"6
Pe !eID8
<. .bYDj&]P{
// 不带换行 M_2[Wypw
? "Hello, world!" e,}]K'!t
>_biiW~x :
// 或者 nJ|8#U7
.wD>0Ig
// 带换行 <~}t;ji
?? 'Hello, world!' qG/a5i
.> 7FVu[Qu
^#R-_I
"b!QE2bRO
OCaml Lj$yGd K<
let main () = C'hI{4@P
print_endline "Hello world!";; _|ucC$*
)-9G*3
0O>8DX
Pascal VX<ZB +R
program Hello; b+NF:-fO
begin v?yH j-
writeln('Hello, world!'); b\%=mN
end. OH28H),}
&DFe+y~PR
-P 5VE0
Perl S#X$QD
#!/usr/local/bin/perl 2oAPJUPOJ
print "Hello, world!\n"; daaEN(
QY2!.a^q
<=V2~
asB
PHP KLXv?4!
<?php l{4=La{?j
print("Hello, world!"); *_$%Tv.]
?> buRXzSR
?kew[oZ
6-#f1D 6
Pike qoMYiF}/e
#!/usr/local/bin/pike AjaG.fa]k
int main() aI|<t^X
{ J!
>HT'M
write("Hello, world!\n"); <}%>a@
return 0; &j/ WjZPF
} +b]g;
M"K$81
:eI.E:/'
PL/I vZC2F
Test: procedure options(main); 4T6dju
declare My_String char(20) varying initialize('Hello, world!'); vhEPk2wD,
put skip list(My_String); g?M\Z";
end Test; v'.?:S&m
$.(>Sj1
O@3EJkv
Prolog 9c806>]U^
goal @3[Z QF
write("hello,world!"). pCA(>(
V5K!u8T
A5Yfm.Jy
Python 2"nd(+QH
#!/usr/local/bin/python SPL72+S`,
print "Hello, world!" (]>c8;o#b
6Pl$DSu
'M+iVF6
REXX -)
$$4<L
say "Hello, world!" =4yME
c\.4I4uy
[dsH0 D&T
Ruby jh`&c{#*)M
#!/usr/bin/ruby gyieS Xz[
print "Hello, world!\n" FgRlxz
YmHn*N}:U
lcvWx%/o@
Scheme l{aXX[E&1
(display "Hello, world!") ;,Sl+)@h
(newline) ?D\6CsNp(2
(I, PC*:
j0o_``
sed (需要至少一行输入) ?YX2CJ6N
sed -ne '1s/.*/Hello, world!/p' g!D?Yj4
bR49(K$~
A;w,m{9<
Smalltalk Z KnEg2a
Transcript show: 'Hello, world!' eUVE8pZl
BG~h9.c
uFb&WIo1
SNOBOL !3 $Ph
OUTPUT = "Hello, world!" k5=0L_xc
END >va#PFHA
lW?}jzuo
`>'E4z]-_
SQL -GCGxC2u
create table MESSAGE (TEXT char(15)); N(]6pG=
insert into MESSAGE (TEXT) values ('Hello, world!'); LwkZ (Tt
select TEXT from MESSAGE; I8`@Srw8
drop table MESSAGE; +QuaQ% lA
P$Xig
k%/Z.4vQG
Tcl qWtvo';3
#!/usr/local/bin/tcl 5>"$95D
puts "Hello, world!" xgL*O>l)
@1gX>!
D^I%tn=F
TScript Cz
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? "Hello, world!" me$7\B;wy
:^1 Xfc"
jUZ84Gm{
Turing P$N\o @
put "Hello, world!" RXb+"/
%IW=[D6Tg
&voyEvX/S
UNIX-style shell wvcG <sj
程序中的/bin/sh可改为您使用的shell ; @-7'%(C
!V$m!i;
#!/bin/sh PE|_V
echo 'Hello, world!' d>)*!l2,C
9EK5#_L[=
F.?^ko9d
GUI >"{3lDyq-
@ bPQhn#(g
Delphi K]oFV
program HelloWorld; n4Ry)O[.
uses gE0k|Z(RF
Dialogs; dMQtW3stY
begin N{tNe-5
ShowMessage('Hello, World!'); "D2`=D!+
end. ,*Tf9=z
.4Jea#M&x
G 2+A`\]
Nuva zdzTJiY2[Z
<. ZTVX5"#Q
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) 4W*52*'F,
.> 8{ 8J(~
0j7W\'!t
~M3`mO+^U
Visual Basic p./zW
)7+
MsgBox "Hello, world!" x/#*M
'或者 EQ-r
Print "Hello, world!" *@S:f"i
"e0$/WQ6J
OySIp[{tJ
Visual FoxPro 9sFZs]uM
? "Hello, world!" G}&B{Ir
/z>G=kA
ZC@ 33Q(
X11 (2[tQ`~
用一个程序 [DC8X P5<
?V4?r2$c
xmessage 'Hello, world!' (q59cA w~X
DFQp<Eq]7
用C++和gtkmm 2 y9{KBM%h
UIi;&[
#include <iostream> Q35$GFj"jD
#include <gtkmm/main.h> Waj6.PCFm
#include <gtkmm/button.h> 3J32W@}.K
#include <gtkmm/window.h> Ya<S/9c
using namespace std; G<# 9`
MxD,xpf
class HelloWorld : public Gtk::Window @Z&El:]3>
{ 7;jwKA;k
public: KbQ UA$gL=
HelloWorld(); 2%'{f
virtual ~HelloWorld(); `|Pfa
protected: 5f(yF
Gtk::Button m_button; n#Q ;bSw
virtual void on_button_clicked(); --4,6va`e
}; T@GT=1E)
{Xb 6wQ"
HelloWorld::HelloWorld() : m_button("Hello, world!") 'X d_8.
{ s {p-cV
set_border_width(10); W,9. z%
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); yl/-!
add(m_button); zRd^Uks
m_button.show(); o|YY,G=C
} (/UW}$] h
<u]M):b3
HelloWorld::~HelloWorld() {} ?`bi8 Ck
`w` f[dU-
void HelloWorld::on_button_clicked() C#d.3t
{ +F.{:
cout << "Hello, world!" << endl; VNBf2Va
} thy)J.<J
sG[v vm
int main (int argc, char *argv[]) `U?"
{;j
{
{ n!z7N3Ak>
Gtk::Main kit(argc, argv); {+%|nOWV
HelloWorld helloworld; l2vIKc
Gtk::Main::run(helloworld); }^U7NZn<"
} @iwVU]j
YRa{6*M
v W=$C
Java HX%lL}E
import java.awt.*; iZ}Afj
import java.awt.event.*; cH%qoHgx
Ezsb'cUa(
public class HelloFrame extends Frame 'APtY;x^{
{ 6<X.]"u+E~
HelloFrame(String title) Q#w mS&$f
{ wCw-EGLR
super(title); ecaEWIOG
} #JMww
public void paint(Graphics g) go >*n\
{ sA$x2[*O
super.paint(g); nwuH:6~"
java.awt.Insets ins = this.getInsets(); HY-7{irR~
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); OH.^m6Z
} $WmB __
public static void main(String args []) yvR3|
{ O&BNhuW2
HelloFrame fr = new HelloFrame("Hello"); DwSB(O#X
2E5n07,
fr.addWindowListener( 1g_p`(
new WindowAdapter() ^u2unZ9BK!
{ @jh\yj rW
public void windowClosing(WindowEvent e) p G|-<6WY
{ t&|M@Ouet
System.exit( 0 ); XBx&&
} (h{"/sR
} &[
oW"Q{
); @yV.Yx"p_
fr.setResizable(true); <MK4#I1I
fr.setSize(500, 100); ;c tPe[5
fr.setVisible(true); #/N;ScyUJT
} U$,-F**
} [A jY~
up _Qv#`Q
9 +1}8"~
Java Applet *2,tGZ
Java Applet用于HTML文件。 \B/!}Tn;
S?Y%}
HTML代码: vw~=z6Ka
Cx~,wk;=
<HTML> K92nh/}y
<HEAD> TmviYP gb
<TITLE>Hello World</TITLE> ] 6Y6q])Z
</HEAD> DXF>#2E^+
<BODY> =w !>/#U
>DM^/EAG{
HelloWorld Program says: q"LE6?hs
JnE\z*NB
<APPLET CODE="HelloWorld.class" WIDTH=600 HEIGHT=100> } "QL"%
</APPLET> "J(T?|t
ntr&