“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。 OyG$ ]C
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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》。 yjbqby7
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以下是用不同语言写成的Hello World程序的几个例子: ^p0BeSRiy;
Ada U>z8gdzu
with Ada.Text_Io; use Ada.Text_Io; G2%%$7Jj
procedure Hello is @i9T),@
begin 5]&vs!wH
Put_Line ("Hello, world!"); pOn>m1|
end Hello; .1.Bf26}d
8S>T1st
J['paHSF
汇编语言 &\$l%icuo
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x86 CPU,DOS,TASM %jK-}0Tu
MODEL SMALL i`^`^Ka
IDEAL 9 T4x1{mO
STACK 100H wyk4v}
3+;}2x0-F
DATASEG a r#p7N
HW DB 'Hello, world!$' )j40hrR
7mSVL\\^
CODESEG Elt=/,v`!
MOV AX, @data JBCcR,\kM*
MOV DS, AX ~h]
<E
MOV DX, OFFSET HW RpE69:~PV
MOV AH, 09H Y" s1z<?
INT 21H &Z_W*D
MOV AX, 4C00H W^W^5-'"D,
INT 21H zQ$*!1FmN
END [e
)j,Q1
1.0S>+^JE
A+T!DnVof
x86 CPU,GNU/Linux,NASM )z9)oM\
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). M?4)U"_VE
;Enter this into "hello.asm" then type: Vc3tKuMsiX
;"nasm -f elf hello.asm" kL,{H~iq;
;"ld hello.o -o hello" c,1Yxg]|
;"./hello" ? Ovl(4VG
]k%Yz@*S
section .data ;data section declaration 'w`:p{E
msg db 'Hello World!',0AH (z0S5#g
,x
len equ $-msg ;string length o[Yxh%T
Da!A1|"
section .text ;code section declaration ~jb6
global _start ;entry point (start of execution) #]i*u1
_start: mov edx,len ;string length 3u7N/OQ(
mov ecx,msg ;string start &,xN$
mov ebx,1 ;file handle: stdout h#?L6<*tm
mov eax,4 ;sys_write Us'm9 J
int 80h ;kernel system call I=wP"(2
kScq#<Y&
mov ebx,0 ;return value #J]u3*Tn|
mov eax,1 ;sys_exit dF*@G/p>V
int 80h ;kernel system call y88FT#hR|5
;CD.8f]N
cs7TAX
x86 CPU,Windows,MASM32 7z"xjA
.386 {T
Z7>k
.model flat,stdcall 15_OtK
option casemap:none _PrK6M@"L
;Include 文件定义 nZa.3/7dJ
include windows.inc z!5^UD8"W
include user32.inc mxhO:.l
includelib user32.lib sn&y;Vc[$
include kernel32.inc @kUCc1LT
includelib kernel32.lib u=feR0|8
;数据段 M-u:8dPu
.data o+SD(KVn-
szCaption db 'A MessageBox!',0 +qe!KPk2
szText db 'Hello,world!',0 sTO*
;代码段 *
c]
:,5
.code ;BqYhi
start: $
+;`[b
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK l [?o du4
invoke ExitProcess,NULL AoL4#.r3H
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 0&Q-y&$7
end start
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gmy$_4+6o
AWK y~An'+yBa
BEGIN { print "Hello, world!" } _6&x$*O
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3
BASIC tT87TmNsA
传统版BASIC(例如GWBASIC): quHq?oXV,
wQ qI@
10 PRINT "Hello, world!" 4[|^78
20 END n1`D:XrE
g4( B=G\j
或在提示符输入: y^tuybpZY<
t\E#8
?"Hello, world!":END m'k.R
j
zE5%l`@|o
现代版BASIC(例如Quick BASIC): -l<b|`s=w.
-;cZW.<
Print "Hello, world!" ~YKe:K+&z
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以下的语句在Quick BASIC中同样有效: #N_C|v/
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? "Hello,world!" +uKh]RP
xtYX}u
f/RzE
BCPL ;@GlJ
'$;
GET "LIBHDR" ya3A^&:
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LET START () BE :@{(^}N8u
$( /)Bk
r/
WRITES ("Hello, world!*N") TJ8IYo|
D
$) .'JO7of
% 1ZJi}~
&p=Uus
Befunge Y~#m-y
"!dlrow olleH">v iTF`sjL
, 3maiBAOKz
^_@ ^JZ ]?iny
hu0z):>y
@igr~hJ
Brainfuck r18euB%
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< "s[wLclfG
+++++++++++++++.>.+++.------.--------.>+.>. F8mS5oB|^
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[E<NEl*
C z ^t6VF M
#include <stdio.h> "/[xak!g
P}hHx<L
int main(void) ")m0{
{ 2#LTd{
printf("Hello, world!\n"); <y[LdB/a
return 0; %0l'Nuz
} ){^o"A?-:
5<ZE.'O
ci*rem
C++ {7swE(N
#include <iostream> "=<T8M
+*&bgGhT
int main() 0Cd)w4C
{ 3NU{7,F
std::cout << "Hello, world!" << std::endl; art
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return 0; _wMx KM
} tNP>6F/
L~9Q7 6w
MYNNeO
C++/CLI e$kBpG"D
int main() Kz>bfq7
{ }#%3y&7M7
System::Console::WriteLine("Hello, world!"); I!sh+e
} -;]m4R)z
u~b;m
-u+@5K;^Y
C# (C Sharp) ws}cMX]*
class HelloWorldApp n}0n!Pr^
{ v *'anw&Z
public static void Main() ZAATV+Z
{ 2S%[YR>>
System.Console.WriteLine("Hello, world!"); @ ;T|`Y=7
} Yf1&"WW4
} c,@&Z#IZ`
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|
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COBOL ]'IZ bx:
IDENTIFICATION DIVISION. HrOq>CSR
PROGRAM-ID. HELLO-WORLD. o,qq*}=
BQW hTS7
ENVIRONMENT DIVISION. ~l {*XM
|h^[/
DATA DIVISION. HpLCOY1-
ws/e~ T<c
PROCEDURE DIVISION. 5;v_?M!UCK
DISPLAY "Hello, world!". da[=d*I.
STOP RUN. 5:R$xgc
I1f4u6\*X
"rl(%~Op
Common Lisp x."R_>
(format t "Hello world!~%") Ga<Uvr%+
|.#G G7F^S
Fal##6B
DOS批处理 nu(;yIRP
@echo off WHF[l1
echo "Hello, world!" W(4Mvd
isBtJ7 \Sc
8(3nv[
Eiffel k3PFCl~e
class HELLO_WORLD s!IX3rz
&u`]Zn
creation 60\`TsFobT
make @1w[~QlV
feature ~:JoKm`vU
make is 8NZQTRdH
local #}p@+rkg2
io:BASIC_IO @D[tljc^
do PtTL
tiE~
!!io "M;aNi^B
io.put_string("%N Hello, world!") =?3b3PZn
end -- make Wa5B;X~
end -- class HELLO_WORLD @?2ES@G+Ji
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^j!2I&h1
Erlang ]5O]=^
u0
-module(hello). /2f
-export([hello_world/0]). gbrn'NT
$2E&~W %
hello_world() -> io:fwrite("Hello, World!\n"). x%'5rnm|
5La' I7q
>~;=
j~
Forth >Jk]=_%
." Hello, world!" CR ( 5 BZZ
|yinV fZ0C
gF>t+"+x
Fortran ;Rf@S$
WRITE(*,10) <y=+Gh
10 FORMAT('Hello, World!') q4T98s2J
STOP i+Lqj
END tfCK^{
bOolBKV
|{ @BH
HTML P,rD{ 0~
<HTML> 5m
yQBKE
<HEAD> /,,IM/(6^
<TITLE> Hello World! </TITLE> DJZ$M
</HEAD> !%'"l{R
<BODY> yNhRh>l
<p>Hello World!</p> }60/5HNr
</BODY> OWc~=Cr
</HTML> +O)Y7k{?C5
Jr=XVQ(F
W)<t7q+
HQ9+
kIR/.Ij}
H mndKUI}d
6~-,.{Y
aHdQi,=z
INTERCAL R2A#2{+H
PLEASE DO ,1 <- #13 9&bJ]
DO ,1 SUB #1 <- #238 a%2K,.J
DO ,1 SUB #2 <- #112 ]*hH.ZBY"^
DO ,1 SUB #3 <- #112 Kk).KgR
DO ,1 SUB #4 <- #0 RF= $SMTk
DO ,1 SUB #5 <- #64 '5(T0Ws/w
DO ,1 SUB #6 <- #238 :Y|[?;
DO ,1 SUB #7 <- #26 ?=im~
DO ,1 SUB #8 <- #248 )O2IEwPd.
DO ,1 SUB #9 <- #168 DP-0,Gt&Xj
DO ,1 SUB #10 <- #24 J|w%n5Y
DO ,1 SUB #11 <- #16 \YSprXe
DO ,1 SUB #12 <- #158 CFUn1^?0
DO ,1 SUB #13 <- #52 h'+F'1=
PLEASE READ OUT ,1 Qff.QI,
PLEASE GIVE UP (^"2"[?a
WXY-]ir.
>Q=Q%~
Java 0g;)je2_2?
public class Hello lL&U
ioo}D
{ u@;e`-@
public static void main(String[] args) dZo x;_b
{ kA> e*6
System.out.println("Hello, world!"); !;4Hh)2
} .%!^L#g
} ((&5F!+\-
*I[tIO\
wD:2sri
JSP l&*=
.Zc7!
<% eL<jA9cJ9
out.print("Hello, world!"); M!D6i5k,
%> LpL$=9
kZ PL$\/A
U^eos;:s8
MIXAL e,r7UtjoxR
TERM EQU 19 the MIX console device number %E"v@
ORIG 1000 start address M~n./wyC
START OUT MSG(TERM) output data at address MSG pSI8"GwQ
HLT halt execution LJom+PxF$x
MSG ALF "MIXAL" !>V)x
ALF " HELL" M[+#*f.T}
ALF "O WOR" f7 |Tp m
ALF "LD " ^KnK
\
END START end of the program T|0+o+i
xQ2:tY#?
IT)3Et@Y
Nuva CZ'm|^S
<..直接输出..>
Bnk'
Hello, world! i"=lxqWeaV
pp@B]We
<..或者..> a4gX@&it_k
O;5lF
<. HOF=qE*p
// 不带换行 3m9b
? "Hello, world!" :5.F
1;DRcVyS+
// 或者 FE]UqB
YRCs&tgs
// 带换行 [qC0YM
?? 'Hello, world!' 5@-H8*
.> (KwC,0p
h5pfmN\-5
TVx
`&C+
OCaml Ibu9AwPm
let main () = G maNi
print_endline "Hello world!";; Wy*+8~@A
n>R(e>
\gB~0@[\7
Pascal E1tCY.N{
program Hello; f$6N
begin vy 7/
writeln('Hello, world!'); ,[t?$Cy;
end. \D(3~y>
P"l'? `
\/?J)k3H.
Perl @4D{lb"{
#!/usr/local/bin/perl gBi3^GxjM?
print "Hello, world!\n"; (3lA0e`Y
@fJsRWvGq
(tOhuSW
PHP *4Ldh}S!
<?php gwQMy$
print("Hello, world!"); ^/#G,MxNy
?> Um6}h@>
IsE3-X|
` =P_ed%&'
Pike d+,!p8Q
#!/usr/local/bin/pike 0VSIyG_Z
int main() 1(dKb
{ aEvbGo
write("Hello, world!\n"); )LIn1o_,
return 0; &
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} /\# f@Sg
c6#E gN,X
-` ViuDX=
PL/I =g!Pw]
Test: procedure options(main); {yWL|:#K
declare My_String char(20) varying initialize('Hello, world!'); VOM@x% 6#c
put skip list(My_String); Wp8>Gfb2
end Test; Ycspdl+(S$
vN\[2r%S
V%PQlc.X
Prolog ?o?$HK
goal $zp|()_
write("hello,world!"). 3&7? eO7*
*
7Ov.v%
&C+2p
Python 3PZ(Kn<
#!/usr/local/bin/python 1h?ve,$
print "Hello, world!" Yq6 @R|u
CYgokS\=,
&Wcz~Gx3Q
REXX Se'SDJl=
say "Hello, world!" &BrFcXF
Lr"cO|F
h7q{i|5
Ruby !zF07.(E
#!/usr/bin/ruby 5l1R")0`t_
print "Hello, world!\n" 7<!x:G?C
K+!e1
'
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c
Scheme jaodcT0
(display "Hello, world!") IRx%L?
(newline) "WQ6[;&V
]zaTX?F:
t-KicLr
sed (需要至少一行输入)
_$c o Y
sed -ne '1s/.*/Hello, world!/p' r^}0qO,XM
3kC|y[.&
.Iqqjk
Smalltalk xm1di@
Transcript show: 'Hello, world!' j67ppt
ah,f~.X_|
$M,<=.oT
SNOBOL d=qVIpZ
OUTPUT = "Hello, world!" PHqg~q;*
END te-xhJ&K
(9I(e^@]
q9rm9#}[J#
SQL [BD`h
create table MESSAGE (TEXT char(15)); ZAn @NA=
insert into MESSAGE (TEXT) values ('Hello, world!'); jDb\4QyC
select TEXT from MESSAGE; 7WS$fUBi
drop table MESSAGE; v{t
pRL0
re[5lFQ~Z
wrgB =o
Tcl 2}pZyS
#!/usr/local/bin/tcl BYEZ[cM
puts "Hello, world!" 1bQO:n):~
c.Sd~k:3
|YROxY"ML
TScript >P~*@>e
? "Hello, world!" 6CHb\k
0H>gMXWE]
zu{K"7Bx
Turing 1gkpK`u(B
put "Hello, world!" 1m"WrTen
g{6jN
oio{@#DX`
UNIX-style shell ]VKQm(,0
程序中的/bin/sh可改为您使用的shell Gm:s;w-;v
%6uZb sa
#!/bin/sh 4vWiOcJF!O
echo 'Hello, world!' SkmTW@v
-`XS2
O)vGIp?f't
GUI L5I!YP#v
R&.&x'<
Delphi 0}NDi|o
program HelloWorld; hxMRmH[f:
uses E|c(#P{
Dialogs; SXqB<j$.;
begin ;hDk gp
ShowMessage('Hello, World!'); CdRJ@Lf
end. &Ril[siw
{guOAT-w
AH&RabH2
Nuva y@~ VE5N
<. i8e*9;4@
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) W..*!UGl
.> 3JQ7Cc>
;LP3
'4i8&p`/
Visual Basic r'{N_|:vv
MsgBox "Hello, world!" B_ict)}ld
'或者 tcXXo&ZS
Print "Hello, world!" lH=|Qu
(J5}1Q<K
^zV_vB)n
Visual FoxPro ?ld&}|W~
? "Hello, world!" bVU4H$k
>"!ScYn
SgxrU&::
X11 *
rlVE
用一个程序 7BU7sQjs
"LB
MYZ
xmessage 'Hello, world!' z7IJSj1gQI
?}8r h%
用C++和gtkmm 2 hH5~T5?\
p*0[:/4
#include <iostream> \_,p@r]Q
#include <gtkmm/main.h> LJ
<pE;`d
#include <gtkmm/button.h> I9G^T' W
#include <gtkmm/window.h> u@e.5_:S)
using namespace std; [k%hl`}
Wj,s/Yr:
class HelloWorld : public Gtk::Window KHZ[drb6$
{ d]s^?=gM
public: asYk#;z\"
HelloWorld(); ~;CNWJtcf(
virtual ~HelloWorld(); lj}3TbM
protected: b/a\{
Gtk::Button m_button; /lUfxc4
virtual void on_button_clicked(); F|>
3gW
}; nk tGO
ZAfuW^r
HelloWorld::HelloWorld() : m_button("Hello, world!") FulFEnSV
{ A{q%sp:3~
set_border_width(10); %:`v.AG
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); C5V}L
add(m_button); Z qn$ >mG-
m_button.show(); `$JvWN,kB
} /5Qh*.(S
Qb?a[[3
HelloWorld::~HelloWorld() {} !gW`xVGv
KJQ8Yhq
void HelloWorld::on_button_clicked() Ll; v[Y
{ RBf#5VjOG!
cout << "Hello, world!" << endl; FCNYfjB%
} 5n2!Y\
/xJD/"Y3&
int main (int argc, char *argv[]) w*XM*yJHU
{ &6OY^6<
Gtk::Main kit(argc, argv); af |mk@
HelloWorld helloworld; nE8z1hBUq
Gtk::Main::run(helloworld); "|Q.{(|kO1
} E<+ G5j
bdstxjJ`
:5/Ue,~ag
Java EF:ec9 .
import java.awt.*; dlfjx
import java.awt.event.*; M}[Q2v\
_f@,)n
public class HelloFrame extends Frame sc+%v1Y#}
{ 8a8a:d
HelloFrame(String title) =5Db^
{ 18NnXqe-m
super(title); ")MHP~ ?
} kbb!2`F!%
public void paint(Graphics g) gq+0t
{ J8S$YRZ_
super.paint(g); T2Z$*;,>T
java.awt.Insets ins = this.getInsets(); HI|egf@
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); 1 jB0gNe
} dj(&"P
public static void main(String args []) *Lrrl
{ of*T,MUI
HelloFrame fr = new HelloFrame("Hello"); .Xp,|T
n+sv2Wv:
fr.addWindowListener( TM6wjHFm
new WindowAdapter() 6w &<j&V
{ LAk
.f
public void windowClosing(WindowEvent e) MV$E_@pg
{ :a)RMp+^0
System.exit( 0 ); W'@G5e
} H.l0kBeG
} Q +l{> sL
); W[J2>`k9
fr.setResizable(true); 0-uj0"r`
fr.setSize(500, 100); aB~k8]q.
fr.setVisible(true); m,+PYq
} =I'iD0eR
} I>.pkf<V
Td|,3
n
BEb?jRMjLg
Java Applet Xxh^4vKjX
Java Applet用于HTML文件。 2H$](k?
ru`7iqcz
HTML代码: DDmC3
mr}o0@5av
<HTML> 0cB]:*W
<HEAD> .?NfV%vv
<TITLE>Hello World</TITLE> vT{(7m!Ra
</HEAD> p9i7<X2&
<BODY> x/{-U05
-5og)ZGVUA
HelloWorld Program says: ^jL)<y4`
?qs LR
<APPLET CODE="HelloWorld.class" WIDTH=600 HEIGHT=100> hd'QMr[;
</APPLET> y g(Na
Ynf "g#(
</BODY> LkYcFD
</HTML> aOg9Dqtg)f
a7_Q8iMe
Java代码: r>8`gAhx
Y~*p27@fR
import java.applet.*; .&b^6$dC
import java.awt.*; Hz,Gn9:p
GtmoFSZ
public class HelloWorld extends Applet ?84f\<"
{ ~H \P0G5GA
public void paint(Graphics g) hb8oq3*x
{ /[Fk>Vhp
g.drawString("Hello, world!", 100, 50); ^3sv2wh^|8
} ?pJ2"/K
} D#'CRJh;7
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HHw&BN