“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。 @r*GGI!
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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》。 :wIA.1bK}
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以下是用不同语言写成的Hello World程序的几个例子: :;eOhZ=_
Ada U U_0@V<
with Ada.Text_Io; use Ada.Text_Io; LvG$J*
procedure Hello is Ly2,*\7
begin 3?FY?Q[
Put_Line ("Hello, world!"); nb/q!8
end Hello; Hl8-q!
yg}O9!M J
YM_ [
汇编语言 fW2NYQP$:
g3kbsi7_:
x86 CPU,DOS,TASM Q"FN"uQ}x
MODEL SMALL IwnDG;+Ap
IDEAL A2ye
^<-C.
STACK 100H H I|a88
- nNKUt.I
DATASEG im&N&A
HW DB 'Hello, world!$' R5=J :o
3'.3RKV
CODESEG s 7 nl
MOV AX, @data @~hy'6/
MOV DS, AX Ql5bjlQdO
MOV DX, OFFSET HW 1r>]XhRFZ
MOV AH, 09H 4Px|:7~wT8
INT 21H =a,qRO
MOV AX, 4C00H `e'wWV
INT 21H FA-cTF[,(
END ||X3g"2W9
Fj<*!J$,
#>aq'47j
x86 CPU,GNU/Linux,NASM *RS/`a;,
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). kB@gy}
;Enter this into "hello.asm" then type: O)&W0`VY
;"nasm -f elf hello.asm" ddN(L`nd
;"ld hello.o -o hello" Tfh2>
;"./hello" 7 w,D2T
*bp09XG
section .data ;data section declaration MUl7o@{'
msg db 'Hello World!',0AH [#Apd1S_
len equ $-msg ;string length _s@PL59,
8zeeC
eI U
section .text ;code section declaration W6>t!1oO+
global _start ;entry point (start of execution) mTu>S
_start: mov edx,len ;string length \9`E17i
mov ecx,msg ;string start :8OT
mov ebx,1 ;file handle: stdout pdJ]V`m
mov eax,4 ;sys_write OcV,pJ
int 80h ;kernel system call AjEy@/
HUjX[w8
mov ebx,0 ;return value G8vDy1`q6
mov eax,1 ;sys_exit w.58=Pr
int 80h ;kernel system call %2dzx[s
`,SL\\%u
RN 4?]8
x86 CPU,Windows,MASM32 %`k [xz
.386 `l'T/F\
.model flat,stdcall |HT7m5tu4
option casemap:none &1<[@:;
;Include 文件定义 IH=$
wc
include windows.inc ',g%L_8Sq
include user32.inc Y _`JS;
includelib user32.lib 36{OE!,i
include kernel32.inc EGgw#JAi#t
includelib kernel32.lib ^k7I+A
;数据段 hK)'dG*
.data n*$g1 HG6
szCaption db 'A MessageBox!',0 octQ[QXo#
szText db 'Hello,world!',0 .F$}a%
;代码段 ByP<-Deh
.code >k`qPpf&
start: &,<,!j)Jr
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK rfVQX<95=/
invoke ExitProcess,NULL .gfi9J
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ?"
4X&6xl
end start *#>(P
D~ 3@v+d
-4+'(3qr
AWK L&s~j/pR
BEGIN { print "Hello, world!" } c-JXWNz
\Y"S4<"R
OKm,iIp]
BASIC )jl@hnA
传统版BASIC(例如GWBASIC): I2HV{1(i
Epp>L.?r
10 PRINT "Hello, world!" ij:a+T
20 END lz>00B<Z
vkJyD/;=
或在提示符输入: U/{t" e
Xh}q/H<
?"Hello, world!":END <%3fJt-Ie
Pi=FnS
现代版BASIC(例如Quick BASIC): |-vyhr0
1J1Jp|j.
Print "Hello, world!" 7Z:3xb&>
p*jU)@a0
以下的语句在Quick BASIC中同样有效: 5P #._Em
<<S4l~"o
? "Hello,world!" KL?<lp"
X sJ`x
Y_faqmZ9]
BCPL r)>'cjx/
GET "LIBHDR" 6[XaIco=C
Y<POdbg
LET START () BE ,9^ 5
$( q*R~gEi#yk
WRITES ("Hello, world!*N") M6MxY\uM
$) |mG;?>c)
h{-en50tN
jN{k }
Befunge NM9ViYm>P
"!dlrow olleH">v =3hJti9[
, "fNv(> -7s
^_@ "Ke_dM
! weYOOu
h\#4[/
Brainfuck b *|?7
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< sR PQr?
+++++++++++++++.>.+++.------.--------.>+.>. |U1u:=[
k(>J?\iNW
!#]kzS0
C )N{PWSPs
#include <stdio.h> /:A239=+ ?
4ybOK~z
int main(void) y'f-4E<
{ < :eKXH2
printf("Hello, world!\n"); Jp)PKS
![
return 0; A+Je?3/.
} tMf5TiWu@
,9=P=JH
&C,]c#-+
C++ @AG=Eq9<o
#include <iostream> m|cRj{xZF
4byh,t
int main() .*FlB>1jy
{ Jz;`L3m
std::cout << "Hello, world!" << std::endl; $3#oA.~R/
return 0; ~c1~)QzZ
} ;XYfw)
?aG ~E
`b@"GOr
C++/CLI l%2B4d9"v
int main() U_B`SS
{ ~;I{d7z,;
System::Console::WriteLine("Hello, world!"); i3Nt?FSN
} 0XIrEwm@%
Xw^:<Nx:
Z[j-.,Qu
C# (C Sharp) d<;XQ.Wo7
class HelloWorldApp @D<Q'7mLh
{ x2f_>tu2
public static void Main() oU 8o;zk0
{ VxAR,a1+n
System.Console.WriteLine("Hello, world!"); 9>@"W-
} n_] OYG>U
} ~Uz|sQ*G
naB[0I&
N
WHF:>0B
COBOL s*}d`"YvH
IDENTIFICATION DIVISION. {la^useg[
PROGRAM-ID. HELLO-WORLD. ?Z7C0u#wd
54LCoG/
ENVIRONMENT DIVISION. ~yf 5$~Z
mKq9mA"(E
DATA DIVISION. kp;MNRc
[K9q+
PROCEDURE DIVISION. zKWi9
DISPLAY "Hello, world!". pK1(AV'L
STOP RUN. khu,P[3>
)5V1HWjU
d ly 0874
Common Lisp ;[zx'e?!
(format t "Hello world!~%") %r,2ZLZ
>\p}UPx
@',;/j80
DOS批处理 ta4<d)nB
@echo off bKaV]Uy
echo "Hello, world!" \)"qN^we
-jw=Iyv
Cw2+@7?|
Eiffel aY+>85?g
class HELLO_WORLD Q\z*q,^R
U)o8Tr
creation / q!&I
make |ZKchd8Yq
feature FxT
[4
make is sR0nY8@F
local DpR%s",Q
io:BASIC_IO V!=]a^]:
do LMDa68 s
!!io 0nd<6S+fs
io.put_string("%N Hello, world!") S9BJjo
end -- make = @f;s<v/
end -- class HELLO_WORLD #,;k>2j0
zBR]bk\
<Jk|Bmw;
Erlang J{ Vl2P?@
-module(hello). 3IxT2@H)
-export([hello_world/0]). U#P#YpD;==
'huLv(Uu
hello_world() -> io:fwrite("Hello, World!\n"). Tk:y>P!%a
Pg36'aTe%j
dd+).*
Forth 5%$#3LT|
." Hello, world!" CR V+q RDQ
'Y\"^'OU\
t}*!UixE
Fortran >:&p(eu)L0
WRITE(*,10) T
l(uqY?9
10 FORMAT('Hello, World!') 8 {%9%{
STOP 98'XSL|
END +lJ]-U|P
}Xv1KX'
-U[`pUY?f
HTML G| oG:
<HTML> $#3<rcOq
<HEAD> $i~`vu*
<TITLE> Hello World! </TITLE> qXhf?x
</HEAD> fcXk]W
<BODY> d ovwB`5
<p>Hello World!</p> os^SD&hL
</BODY> VQMd[/
</HTML> l zPS
RT
%uqD\`-
9XvM%aHs:
HQ9+ n4T2'e
H W;]UP$5l
%&+R":Bw
6-14Htsk6
INTERCAL EiP&Y,vT
PLEASE DO ,1 <- #13 ]G~N+\8]U
DO ,1 SUB #1 <- #238 }SN44 di(
DO ,1 SUB #2 <- #112 LY:?OGh
DO ,1 SUB #3 <- #112 hs_|nr0;[
DO ,1 SUB #4 <- #0 N<"6=z@w+
DO ,1 SUB #5 <- #64 U{uWk3I_b
DO ,1 SUB #6 <- #238 c&?a,fpb
DO ,1 SUB #7 <- #26 4m[C-NB!g
DO ,1 SUB #8 <- #248 ^I~T$YjC '
DO ,1 SUB #9 <- #168 ::Q);
DO ,1 SUB #10 <- #24 \ +-hn
DO ,1 SUB #11 <- #16 -L3
|9k
DO ,1 SUB #12 <- #158 jsi#l
DO ,1 SUB #13 <- #52 ^'53]b:
PLEASE READ OUT ,1 xc<eU`-'b
PLEASE GIVE UP 2n;;Tso"
:Z]hI+7
3et2\wOX1x
Java ~eOj:H
public class Hello Dw/Gha/
{ LO} :Ub
public static void main(String[] args) p2c=;5|/Q
{ Q()RO*9
System.out.println("Hello, world!"); 2|H91Y2
} vWi.[]
} kPX2e h
Q'Kik5I
BOiz ~h6
JSP 9H, &nET
<% .UhBvHH
out.print("Hello, world!"); *[1u[H9Cv
%> xAd>",=~
6:@t=C
Y^ZBA\D2,k
MIXAL BUA6(
TERM EQU 19 the MIX console device number @FdCbPl$
ORIG 1000 start address o=RqegL
START OUT MSG(TERM) output data at address MSG ZOrTbik
HLT halt execution Gz[ymj)5
MSG ALF "MIXAL" IL>/PuZku
ALF " HELL" tC@zM.v%
ALF "O WOR" K)Xs L
ALF "LD " B`?N0t%X
END START end of the program
A?;8%00
e9Ul A
0nD=|W\@{
Nuva VM]GYz|#]
<..直接输出..> h\u0{!@}
Hello, world! EB29vHAt~
D _bkUR1
<..或者..> \Ul.K!b7
lA.;ZD!
<. kToVBU$
// 不带换行 l\=-+'Y
? "Hello, world!" CmJ?_>
pe!dm}!h[
// 或者 FfYd+]+?
.W@(nQ-<
// 带换行 /[20e1 w!
?? 'Hello, world!' KCJN<
.> I| W'n-4Y
1(%>`=R8
0tW<LR-}E
OCaml G+hF
[b44'
let main () = h"PS-]:CD
print_endline "Hello world!";; 4{*tn"y
YH'$_,8peM
_^6|^PT.
Pascal Y(hW(bd;
program Hello; ,W1a<dl
begin ^zaKO'KcV
writeln('Hello, world!'); +
%MO7vL
end. jF38kj3O7
})o~E
C5PmLiOHY>
Perl yHWi[7$
#!/usr/local/bin/perl 6WE&((r^
print "Hello, world!\n"; \);.0
.1.J5>/n
$=PWT-GIR
PHP )|w*/JK\Z
<?php J$#h(D%
print("Hello, world!"); Z0[)u_<
?> f{y]
)\T@W
.7
(DxN
Pike y4xT:G/M
#!/usr/local/bin/pike ?Yq J.F;
int main() ^Yj"RM$;N
{ `y\*m]:
write("Hello, world!\n"); I?_E,.)[ I
return 0; V19e>
} Z69+yOJI
H-eEhI(;O
)t|^Nuj8
PL/I AIuMX4nb
Test: procedure options(main); "| Kf'/r
declare My_String char(20) varying initialize('Hello, world!'); HQq`pG%m6
put skip list(My_String); rr |"r
end Test; IFiTTIlT0
0o=!j3RjH
[RAj3Fr0
Prolog i]it5
goal U?bG`. X
write("hello,world!"). 1#grB(p?
n!GWqle
y L*LJ
Python rmOQ{2}
#!/usr/local/bin/python vG Y!4@[
print "Hello, world!" mO#I nTO
9'1hjd3k
82lr4
REXX jvu
N
say "Hello, world!" Z[Wlyb0
,{?wKXJ}L!
`)"tO&Fn
Ruby E]NY
(1
#!/usr/bin/ruby ^w>&?A'!
print "Hello, world!\n" SU/G)&Mi
7'Lp8
g;8M<`qvf
Scheme DlDB=N0@S
(display "Hello, world!") 0f1H8zV
(newline) 'f 3HKn<L
hHpx?9O+!
h%'
N hV
sed (需要至少一行输入) 1YFeVMc
sed -ne '1s/.*/Hello, world!/p' g^jJ8k,7(
oew|23Ytb
3c b[RQf
Smalltalk ^]VcxKU J
Transcript show: 'Hello, world!' +kM\
D~D1
*|oPxQCtK
cv= \g Z
SNOBOL D3y>iQd
OUTPUT = "Hello, world!" ^uhxURF
END \*uugw,\y
)S2iIi;Bq
WHP;Neb6
SQL Xtkw Z3
create table MESSAGE (TEXT char(15)); w,Q)@]_
insert into MESSAGE (TEXT) values ('Hello, world!'); `NQ{)N0!
select TEXT from MESSAGE; BhLZ7 *
drop table MESSAGE; '*4iqPR;
yw'ezpO"
9\AS@SH{^T
Tcl VG)="g[%)
#!/usr/local/bin/tcl G,]z(%
puts "Hello, world!" -KiRj!v|
2 5Q+1
=:gjz4}_8
TScript ^!}F%
? "Hello, world!" 9`BEi(z
T`?n,'!(
:G}DAUFN
Turing &hI>L
put "Hello, world!" ^X&)'H
4\ FP
b+Vi3V
UNIX-style shell vU}: U)S
程序中的/bin/sh可改为您使用的shell 3u_oRs
*Tp]h 0
#!/bin/sh H* /&A9("
echo 'Hello, world!' /PqUXF
4fty~0i=z
RM,'o[%
GUI 2ce'fMV
q5p e~
Delphi 3] ^'
program HelloWorld; N@()F&e
uses cy3M^_5B<
Dialogs; ZMdW2_*F
begin Dx3 %KS
ShowMessage('Hello, World!'); qlUzr.^-
end. U:n*<l-k}
TsD;Kl1
F7T E|LZ
Nuva dIJGB==
<. KjOi(YUnq7
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) h0Jl_f#Y
.> <d"Gg/@a
nU17L6'$
C[8Kl D
Visual Basic 1lcnRHO
MsgBox "Hello, world!" gxmc|
'或者 ]"sRS`0+
Print "Hello, world!" m7m
\`;
|>2:eH
T3z(k
la
Visual FoxPro Yy
h=G
? "Hello, world!" %F J#uQXZ
o56kp3b)b
k1fRj_@WPT
X11 5v9uHxy
用一个程序 Rla4L`X;
C9jbv/c
xmessage 'Hello, world!' `?uPn~,e8
^i`*Wm@!
用C++和gtkmm 2 ]XUSqai
Mr*|9h
#include <iostream> V@Wcb$mgk
#include <gtkmm/main.h> |scUo~
#include <gtkmm/button.h> Dp^/gL=
#include <gtkmm/window.h> K@r*;T
using namespace std; D9-Lg%
O,mip
class HelloWorld : public Gtk::Window io4aYB\
{ bk3Unreh
public: xvDI 4x&
HelloWorld(); 5AOfp2O
virtual ~HelloWorld(); XDYosC:
protected: o:UXPAj
Gtk::Button m_button; !kXeO6X@m
virtual void on_button_clicked(); IKcKRw/O$
}; CgnXr/!L
8#59iQl
HelloWorld::HelloWorld() : m_button("Hello, world!") Y {c5
{ &1GUi{I
set_border_width(10); p4>,Fwy2
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); %S#WPD'Y
add(m_button); ow.6!tl0=h
m_button.show(); <4mQ*6
} ^\wl2
n}J^6:1
HelloWorld::~HelloWorld() {} o6|-=FcvC
HXks_ix )
void HelloWorld::on_button_clicked() C5n?0I9
{ S()Za@ [a$
cout << "Hello, world!" << endl; eb!_ie"D
} !k<:k
"7
AS;.sjgk
int main (int argc, char *argv[]) z{?4*Bq
{ T:!MBWYe |
Gtk::Main kit(argc, argv); z[&s5"
HelloWorld helloworld; )saR0{e0N
Gtk::Main::run(helloworld); }<[Db}?9
} `6Hf&u<
c> G@+
Eark)
Java t(?<#KUB-
import java.awt.*; Dip*}8$o(w
import java.awt.event.*; _CdROo6I
a8s4T$
public class HelloFrame extends Frame ^M
Ey,
{ A=`*r*
HelloFrame(String title) F?4Sz#
{ xP@/9SM
super(title); }uQ${]&D
} yJD>ny
public void paint(Graphics g) U e*$&VlT
{ K$-;;pUl
super.paint(g); ?`P2'i<b
java.awt.Insets ins = this.getInsets(); Z?1OdoT-
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); e@jfIF0=}
} m6U8)!)T
public static void main(String args []) dAxp ,):&J
{ dDlG!F_=
HelloFrame fr = new HelloFrame("Hello"); XO
wiHW{
4/MNqit+
fr.addWindowListener( YIOR$
new WindowAdapter() !F7: i
{ n,nisS
public void windowClosing(WindowEvent e) V/bH^@,sA
{ [ud|dwP"
System.exit( 0 ); 4<}A]BQVkJ
} Y6VQ:glDT-
} p\S8oHWe
); afm_ Rrg[
fr.setResizable(true); 93D
\R
fr.setSize(500, 100); t _\MAK
fr.setVisible(true); I,j3bC
} NG9vml
} #F4X}
Gvn : c/m;
l0`'5>
Java Applet fn1pa@P
Java Applet用于HTML文件。 s.y}U5Ty?P
FpzP#;
HTML代码: `Zf9$K|
[TCRB`nTQF
<HTML> !K\itOEP-
<HEAD> H[BYE
<TITLE>Hello World</TITLE> *Sb2w*c>
</HEAD> KjYDFrR4
<BODY> }vD;DSz:
o+^Eu}[.
HelloWorld Program says: C BlXC7_Mi
XU-*[\K
<APPLET CODE="HelloWorld.class" WIDTH=600 HEIGHT=100> 8IJ-]wHIb
</APPLET> [&daG