“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。 Y=83r]%
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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》。 Z=ZTSl
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以下是用不同语言写成的Hello World程序的几个例子: $;iMo/
Ada aC90IJ8^
with Ada.Text_Io; use Ada.Text_Io; OCW0$V6;D-
procedure Hello is 6C'W
begin 4t
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Put_Line ("Hello, world!"); Nwwn #+
end Hello; atiyQuT6Wh
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kz_gR;"(Z
汇编语言 Xfc+0$U@
$-=xG&fSz
x86 CPU,DOS,TASM dvAG}<
MODEL SMALL ;NMv>1fI
IDEAL _^/k
STACK 100H 9| g]M:{
CP'b,}Dd?I
DATASEG VQ"Z3L3-4
HW DB 'Hello, world!$' ~] &yHzp2
]z#+3DaH
CODESEG K<rv|bJ
MOV AX, @data vX@TZet0
MOV DS, AX **V8a-@
MOV DX, OFFSET HW l"zA~W/
MOV AH, 09H 5,\-;
INT 21H Iq?n*P$
MOV AX, 4C00H I A%ZCdA;
INT 21H -aq3Lqi
END "4IrW6B$9
F;bkV}^
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x86 CPU,GNU/Linux,NASM 1Q_Q-Z
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). (#?O3z1@"
;Enter this into "hello.asm" then type: S zNZY&8
f
;"nasm -f elf hello.asm" ]]o?!NX
;"ld hello.o -o hello"
J8-K
;"./hello" \G#_z|'dN
~GE|,Np
section .data ;data section declaration P{LS +.
msg db 'Hello World!',0AH 4_D
*xW
len equ $-msg ;string length (mr*Thy`@
-{}(U
section .text ;code section declaration 9Af nMD
global _start ;entry point (start of execution) 6FYL},.R
_start: mov edx,len ;string length 4.Q[Tu
mov ecx,msg ;string start !1ZItJ74#
mov ebx,1 ;file handle: stdout H&8~"h6n
mov eax,4 ;sys_write &pf"35ll
int 80h ;kernel system call 3@nIoN'z
\QQWh wE
mov ebx,0 ;return value h3bQ<?m
mov eax,1 ;sys_exit Vm?# ~}T
int 80h ;kernel system call r$v\ \^?2
o|u4C {j
Zor!hc0<
x86 CPU,Windows,MASM32 oxBTm|j7
.386 ^q_wtuQ
.model flat,stdcall p$G3<Z&7
option casemap:none !?R#e`}
;Include 文件定义 KWxTN|>
include windows.inc *<:6A&'D9
include user32.inc A;5_/ 2
includelib user32.lib 9B![l=Gh
include kernel32.inc M,W-,l
]
includelib kernel32.lib {sxdDl
;数据段 QW'*^^
.data ^I|i9MH
szCaption db 'A MessageBox!',0 =`*@OJHH
szText db 'Hello,world!',0 l-cBN^^
;代码段 JB%_&gX)v
.code =E$bZe8
start: G)^/#d#&
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ~3-"1E>Rgy
invoke ExitProcess,NULL !Pz#czo
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> FA>.1EI
end start O8A(OfX
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R:(i}g<3
AWK ;
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BEGIN { print "Hello, world!" } 4s~X
Pwj|]0Y@
Q=>5@sZB
BASIC J+Fev.9>
传统版BASIC(例如GWBASIC): `mW~ {)x
"+4Jmf9
10 PRINT "Hello, world!" {qlcTc
20 END 6;\1bP?
x_I*6?
或在提示符输入: 3UmkFK<
r7].48D
?"Hello, world!":END OiXO<1'$
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现代版BASIC(例如Quick BASIC): M%la@2SK=
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Print "Hello, world!" <"6\\#}VG
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以下的语句在Quick BASIC中同样有效: "f<gZsb
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? "Hello,world!" N
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u{va2n/
%'i_iF8.
BCPL CbW[_\
GET "LIBHDR" ,Y6]x^W
ra6\+M~}e
LET START () BE iLJ@oM;2
$( AX%}ip[PC
WRITES ("Hello, world!*N") Hc@_@G
$) !hM`Oe`S
lwgwdB
R&6@*Nn
Befunge Fbu4GRgJ3
"!dlrow olleH">v GDC@s<[k
, N%>h>HJ
^_@ 1$.svR
kr~n5WiAZ
N?-ZvE\C
Brainfuck 'I+M*Iy
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 8f[ztT0`g
+++++++++++++++.>.+++.------.--------.>+.>. 4)OOj14-V
QW,:'\G
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V
C {]8|\CcY?
#include <stdio.h> OI6Mx$
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int main(void) MZX)znO
{ ZiQ<SSo:
printf("Hello, world!\n"); oy#(]K3`O
return 0; 0Fon`3(^\
} T%&vq6
r5UVBV8T
u&c%L0)E&
C++ 4Eu'_>"a
#include <iostream> 1U.X[}e
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int main() 0wNlt#G;{
{ w0Nm.=I-
std::cout << "Hello, world!" << std::endl; lEwQj[ k
return 0; GRYw_}Aa
} rjWtioZEa
(pv}>1
0fBwy/:
C++/CLI /;Hqv`X7
int main() =v::N\&
{ u0arJU_.)
System::Console::WriteLine("Hello, world!"); R= mTJ'y
} F1_,V?
{V(~
o938!jML_
C# (C Sharp) 7?uDh'utt
class HelloWorldApp v!ai_d^
{ s+fxv(,"c
public static void Main() !',%kvJI
{ @{fwM;me]P
System.Console.WriteLine("Hello, world!"); HH7WMYoKY
} :vEfJSA
1<
} i}C%8}%
XI[n!)3
oVZzvK(zR
COBOL :;hg :Q:
IDENTIFICATION DIVISION. DjN1EP\Xx
PROGRAM-ID. HELLO-WORLD. ?yjg\S?L
`i(b%$|^&Z
ENVIRONMENT DIVISION. /0gr?I1wr7
Dzu//_u
DATA DIVISION. 0U*f"5F
tKe-Dk9
PROCEDURE DIVISION. eHs38X
DISPLAY "Hello, world!". CEw%_U@8
STOP RUN. yF6AI@y
nIlTzrf6
pL[3,.@WA
Common Lisp +HUy,@^Pa
(format t "Hello world!~%") t>N2K-8Qh
4OJD_
Iq,h}7C8'
DOS批处理 6XZjZ*)W
@echo off J%r:"Jm[y1
echo "Hello, world!" 0L32sFy
VO {z)_
']\SX*z?
Eiffel `<v$+mG
class HELLO_WORLD )i:*r8*~
(X\]! 'A
creation j[\:#/J
make u0=&_Q(=
feature J;wBS w%1
make is F|m &n&
local n!8W@qhew
io:BASIC_IO =ca[*0^Z7
do 8pr toCB
!!io 2NjgLXP
io.put_string("%N Hello, world!") J|
wk})?
end -- make SYsO>`/ )
end -- class HELLO_WORLD "PN4{"`V
*!
:j$n;
C_q2bI
Erlang f2o6GC_
-module(hello). C|IHRw`[
-export([hello_world/0]). I9xu3izAmR
x_<#28H!
hello_world() -> io:fwrite("Hello, World!\n").
n=~!x
J> ,w},`
QbSLSMoL
Forth 7\yh(+ kN
." Hello, world!" CR wVI_SQ<8V
L..
q&?hwX
Z7
Fortran V6c8o2G;+
WRITE(*,10) : 4-pnn
10 FORMAT('Hello, World!') r|u R!=*|?
STOP #Q["[}flVv
END iumwhb
F,VWi$Po\N
a[j]fv*6
HTML [X]hb7-&
<HTML> e2V;6N
<HEAD> UfO='&U^
<TITLE> Hello World! </TITLE> Y$Rte.?
</HEAD> ,+h<qBsV@
<BODY> S[y_Ewzq
<p>Hello World!</p> nwfu@h0G
</BODY> seAEv0YWz
</HTML> )
d'H&c3
A@d 2Ukv
+.^pAz U}R
HQ9+ _PC<Td>nm
H N`H`\+
@44*<!da
JS\]|~Gd
INTERCAL 0d:t=LKw)
PLEASE DO ,1 <- #13 @sZ' --Y
DO ,1 SUB #1 <- #238 HL$7Ou
DO ,1 SUB #2 <- #112 pON#r
DO ,1 SUB #3 <- #112 :TKx>~`
DO ,1 SUB #4 <- #0 %$)Sz[=
DO ,1 SUB #5 <- #64 lF46W
DO ,1 SUB #6 <- #238 7iv g3*
DO ,1 SUB #7 <- #26 W:w SM*
DO ,1 SUB #8 <- #248 s{X+0_@Q
DO ,1 SUB #9 <- #168 Wq 1OYZ,
DO ,1 SUB #10 <- #24 5oB#{h
DO ,1 SUB #11 <- #16 pV:44
DO ,1 SUB #12 <- #158 :~s*yznf
DO ,1 SUB #13 <- #52 &F[N$6:v
PLEASE READ OUT ,1 N;}X$b5Y @
PLEASE GIVE UP 5__B
M5|
n^qwE
=\i%,YY
Java 2t?>0)*m
public class Hello MX!N?k#KhP
{ vt(}8C+
public static void main(String[] args) 4v5qK
{ Sc}Rs
System.out.println("Hello, world!"); #-"C_~-MH
} tv`c"Pb
} T(cpU,Q
?wIEXKI
QJx<1#
JSP D^];6\=.i
<% w9gfva$&
out.print("Hello, world!"); 0R]'HA>
%> @l_rB~
Yyw3+3
o:as}7/^
MIXAL $|!3ks
TERM EQU 19 the MIX console device number SD:Bw0gzrI
ORIG 1000 start address Ts=TaRwWf
START OUT MSG(TERM) output data at address MSG RR/?"d?&
HLT halt execution EQHCw<e
MSG ALF "MIXAL" L1@<7?@X
ALF " HELL" D7B g!*
ALF "O WOR" aE:$ N#|Qa
ALF "LD " brqmi<*9"[
END START end of the program i{HzY[
Tz\v.&? $
\vL{f;2J
Nuva n5fc_N/8O=
<..直接输出..> zE}ry!{
Hello, world! 00Ye
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<..或者..> \K
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ojIGfQV
<. uS xldc
// 不带换行 {HVsRpNEf
? "Hello, world!" 7<?Aou
uF
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// 或者 /}d)g4\j
d=g,s[FMm
// 带换行 m^tf=O<
?? 'Hello, world!' ZNDjk
.> ^'b\OUty-
O;(n[k
]0}NF
OCaml Vk1 c14i>
let main () = X#MC|Fzy@
print_endline "Hello world!";; R?2T0^0
U[ogtfv`m
Fj&8wZ)v)
Pascal Ff[GR$m
program Hello; @<
0c
begin OuPfB
writeln('Hello, world!');
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end. sA,2gbW
`2G%&R,k"D
R]S!PSoL
Perl S=`#X,Wo
#!/usr/local/bin/perl +OOmy
print "Hello, world!\n"; nc#} \
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,esUls'nz'
PHP 'FG@Rg(
<?php bI)%g
print("Hello, world!"); q9$K.=_5
?> #b;TjnC5{$
~8lB#NuN
(+bt{Ma
Pike WG5)-;>q|
#!/usr/local/bin/pike d!4:nvKx
int main() h,i=Y+1
{ {"*gX&;~
write("Hello, world!\n"); XK@Ct eP"
return 0; '=ydU+X
} U~8, N[
>\s+A2P
$< .wQ8:Q
PL/I "Q1oSpF
Test: procedure options(main); xGw|@d
declare My_String char(20) varying initialize('Hello, world!'); Y\9zjewc
put skip list(My_String); JuRx>F4
end Test; Ap<j;s4`
1Zgv+.
3s,a%GOk
Prolog uVZX53 ,g
goal g_(O7
write("hello,world!"). WWVQJ{,}
#>">fs]
cx*$GaMk
Python f2i9UZ$=e!
#!/usr/local/bin/python na]
9-~4
print "Hello, world!" a)rT3gl
E*#5OT
,egbU(:l
REXX P,K^oz}
say "Hello, world!" .2*h!d)E
jlaC: (6
$8NM[R.8^4
Ruby m/aA
q8
#!/usr/bin/ruby iY3TB|tMt
print "Hello, world!\n" oSkvTK$&i
9_J'P2e
(iu IeJ^Z
Scheme ,TQ;DxB}=E
(display "Hello, world!") .|2[!7CXH
(newline) gq&jNj7V
Qa,$_,E
)bK3%>H#
sed (需要至少一行输入) /*m6-DC
sed -ne '1s/.*/Hello, world!/p' <d$t*vnq
c^}DBvG,
.-.b:gdO(
Smalltalk d+&w7/F
Transcript show: 'Hello, world!' $%?[f;S3,
n<DZb`/uHZ
!'kr:r}gg
SNOBOL [yDOvQ[
OUTPUT = "Hello, world!" ffem7eQ
END w)"F=33}5
Poxoc-s
hGU 3DKHT
SQL dIk9C|-.
create table MESSAGE (TEXT char(15)); w,;ox2
insert into MESSAGE (TEXT) values ('Hello, world!'); 256V
xn
select TEXT from MESSAGE; B1z7r0Rm,
drop table MESSAGE; 6'jgjWEe3&
K,@} 'N
8k?V&J `
Tcl \r-v]]_<d
#!/usr/local/bin/tcl km6O3>p5r
puts "Hello, world!" fq !CB]C
z]1g;j
*!`bC@E
TScript K,H xe;-
? "Hello, world!" ho}G]y
<(BIWm*
Q*R9OF
Turing <|VV8r93
put "Hello, world!" /F}dC/W
hGo/Ve+@
r-&* `Jh
UNIX-style shell Lc f]
程序中的/bin/sh可改为您使用的shell r9~I R
S
vW{1
#!/bin/sh A2I\T,Z
echo 'Hello, world!' gg$:U
5
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0|]qWcD
GUI |i- S}M
K#dG'/M|Pb
Delphi ._`?ZJ
program HelloWorld; pB,l t6
uses U
sV?}
Dialogs; ;:P}s4p
begin [B%:!Q)@
ShowMessage('Hello, World!'); [V41 Gk
end. pwo @
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K#]FUUnj=
+e&Q<q!,q
Nuva x6
h53R
<. `&SBp }W}
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) `6o5[2V
.> 7:wf!\@I
? 1Uq ud
C.+:FY.H
Visual Basic HLl"=m1/>
MsgBox "Hello, world!" =${ImMwj
'或者 r1.OLn?C
Print "Hello, world!" ;%O>=m'4
6o]>lQ}
i^V3u
Visual FoxPro 10r9sR
? "Hello, world!" ?# )\SQ
M/jdMfU
&u~%5;
X11 'BNZUuUl
用一个程序 oNRp
y(jd$GM|
xmessage 'Hello, world!' 49dN ~k=
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用C++和gtkmm 2 rqhRrG{L|&
;ZR^9%+y9
#include <iostream> W";Po)YC
#include <gtkmm/main.h> i&JI"Dd7
#include <gtkmm/button.h> `
NWmwmWB"
#include <gtkmm/window.h> >RKepV(X7
using namespace std; 9a{9|p>L
n$ZxN"q <
class HelloWorld : public Gtk::Window B-tLRLWn
{ ]0;,M
public: }62Q{>`
HelloWorld(); {)& b6}2h
virtual ~HelloWorld(); u1/q8'RW
protected: B{lL}"++0
Gtk::Button m_button; 9,0}}3J
virtual void on_button_clicked(); ]VK9d;0D
}; o.>Yj)U
Xb7G!Hk#g
HelloWorld::HelloWorld() : m_button("Hello, world!") seNH/pRb
{ 1:Xg&4s
set_border_width(10); ph@2[rUp
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); Hv|(V3-
add(m_button); SNtOHTQ
m_button.show(); P:c'W?
} :*)b<:4
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HelloWorld::~HelloWorld() {} gEnc;qb
vjYG>YhV
void HelloWorld::on_button_clicked() [,q^\T
{ q??N,
cout << "Hello, world!" << endl; $lf\1)B~*
} ^uIKwql
]`eJSk.
int main (int argc, char *argv[]) SRc|9W5t*J
{ X$ 76#x
Gtk::Main kit(argc, argv); k1M?6TW&
HelloWorld helloworld; S-G#+Ue2
Gtk::Main::run(helloworld); Aq{7WA
} K yp(dp>
dV+GWJNNE
p0j-$*F
Java 4t0-L]v4.*
import java.awt.*; q<?r5H5
import java.awt.event.*; "aeKrMgc6V
&^@IAjxn
public class HelloFrame extends Frame v*EErQML8b
{ +/2:
HelloFrame(String title) ,ikn%l#cm
{ 0+"P1/
super(title); v9vY#W
} R86:1
public void paint(Graphics g) -Khb
{ -Hu]2J)
super.paint(g); i+Btz-
java.awt.Insets ins = this.getInsets(); PVUNi: h
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); ^W<uc :L7
} ?c#v'c^=h
public static void main(String args []) b. oA}XP
{ [bJAh ` I
HelloFrame fr = new HelloFrame("Hello"); 8??%H7~
<