“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。 8X I?
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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》。 Y;)dct
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以下是用不同语言写成的Hello World程序的几个例子: <a[Yk 2
Ada ]>+PnP35G
with Ada.Text_Io; use Ada.Text_Io; Z*])6=2Q
procedure Hello is $DZHQH
begin bO&7-Z~:=
Put_Line ("Hello, world!"); uaOKv.%
end Hello; H<QT3RF2
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s
汇编语言 0d3+0EN{
5r?m&28X
x86 CPU,DOS,TASM NuYkz"O]
MODEL SMALL ]XTu+T.aT
IDEAL Z(9u<
STACK 100H CEC
nq3
YFTjPBV
DATASEG w=}uwvn NX
HW DB 'Hello, world!$' Nr0
(E
D)@YI.T
CODESEG 0jzbG]pc:E
MOV AX, @data @o-B{EH8
MOV DS, AX l$YC/bP
MOV DX, OFFSET HW VL[kJi
MOV AH, 09H &<+ A((/i
INT 21H 3mSXWl^?
MOV AX, 4C00H PC qZNBN
INT 21H (D
9Su^:1
END $-&BB(-{E&
#_B-4sm
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x86 CPU,GNU/Linux,NASM Dk='+\
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). sO5?aB&
;Enter this into "hello.asm" then type: J-ePE7i
;"nasm -f elf hello.asm" @G:V
;"ld hello.o -o hello" q|%(3,)ig
;"./hello" 'oN\hy($,h
5P .qXA"D
section .data ;data section declaration >j{z>
msg db 'Hello World!',0AH qiZO _=0
len equ $-msg ;string length NWd<+-pC6
1lsLJ4P
section .text ;code section declaration C_ \q?>
global _start ;entry point (start of execution) 3&x-}y~sg
_start: mov edx,len ;string length @A+RVg*=
mov ecx,msg ;string start ex<O]kPFE
mov ebx,1 ;file handle: stdout +`sv91c
mov eax,4 ;sys_write gt\MS;jMa
int 80h ;kernel system call )I\=BPo|B
a,o_`s<
mov ebx,0 ;return value {,cCEXag%
mov eax,1 ;sys_exit >I<r)w]
int 80h ;kernel system call )?2e
HK~xOAF
,KJw|x4}\
x86 CPU,Windows,MASM32 UYA_jpI P
.386 e;GU
T:
.model flat,stdcall @Eb2k!T
option casemap:none ~Xlrvb}LP
;Include 文件定义 bT6sb#"W
include windows.inc )XfzLF7
include user32.inc J>^\oAgpE
includelib user32.lib f""`cdqAOh
include kernel32.inc QW_agm
includelib kernel32.lib ]?h`:,]
;数据段 ^ZM0c>ev=l
.data P"lBB8\eku
szCaption db 'A MessageBox!',0 ;Efcw[<
szText db 'Hello,world!',0 F3oQ^;xB
;代码段 kF;5L)o
.code o&hIHfZri
start: Jd,)a#<j
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK f1PN|
invoke ExitProcess,NULL >\ u<&>i
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> }YOL"<,:o
end start ~Z ~v
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`mH %!{P
AWK K\^ 0_F K
BEGIN { print "Hello, world!" } l/y]nw
0GDvwy D1
m uW!xY
BASIC Ro=AADv@
传统版BASIC(例如GWBASIC): T<-=nX
?4CNkk=v
10 PRINT "Hello, world!" 93IFcmO.H@
20 END "7d-z<^n
z^nvMTC
或在提示符输入: <?0~1o\Ur
j%V["?)
?"Hello, world!":END J!ntXF
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现代版BASIC(例如Quick BASIC): { m8+Wju}
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Print "Hello, world!" OTB$V k
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以下的语句在Quick BASIC中同样有效: t!1$$e?`r
nH !3(X*
? "Hello,world!" $ XBAZ<"hd
}%TSGC4{
U"f??y%)
BCPL fQnwy!-\
GET "LIBHDR" sP'0Sl~NU
c~<1':
LET START () BE $[@0^IJq=K
$( Ovw[b2ii
WRITES ("Hello, world!*N") QO{y/{
$) -V %gVI[
2eQdQwX
?y XAu0
Befunge %OcGdbs
"!dlrow olleH">v 'rb'7=z5
, .r+hERcB
^_@ (IbW;bV
E3/:.t
Dbx~n#n G
Brainfuck <uP^-bv;(
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< N"[B=fU}
+++++++++++++++.>.+++.------.--------.>+.>. rAdacnZV
Gi^Ha=?J%
.wrL3z_
C $\a5&1rl
#include <stdio.h> !SHj$Jwa'
7@%'wy&A
int main(void) _L.n,
{ % 0:p)Z0
printf("Hello, world!\n"); vOI[Z0Lq9h
return 0; -m 5}#P89
} RAs0]K
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tZWrz
e^
C++ Fs/?
#include <iostream> IxDWJ#k
&ogt2<1W
int main() ]"fsW 9s
{ J?:[$ C5
std::cout << "Hello, world!" << std::endl; )wzV
$(~
return 0; 7q9gngT1LA
} !{_yaVF
;eB ~H[S/
9vGs;
C++/CLI mjnUs-`W|
int main() K7vw3UwGN
{ Y\/gU8w/
System::Console::WriteLine("Hello, world!"); 10sK]XI
} y@ek=fT%4
m)?5}ZwAH
1ywU@].6J]
C# (C Sharp) J_#R 87
class HelloWorldApp #$'"cfRxc
{ BZ+-p5]-
public static void Main() w3*-^: ?j
{ R
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System.Console.WriteLine("Hello, world!"); 6a}r( yP
} ySNV^+
} @y~P&HUN
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Z&yaSB
COBOL ,WTTJN
IDENTIFICATION DIVISION. 2C+(":=}
PROGRAM-ID. HELLO-WORLD. U_z2J(e~
v1[_}N9f>H
ENVIRONMENT DIVISION. 0^ !Gib
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DATA DIVISION. d}0qJoH4
ZKbDp~
PROCEDURE DIVISION. Db03Nk>#
DISPLAY "Hello, world!". \ a-CN>
STOP RUN. :pKG\A
-
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Bmr<O!
Common Lisp +QqH}=
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(format t "Hello world!~%") ij)Cm]4(2
7t(Y;4<2
:
1)}Epo,
DOS批处理 )BV=|,j
@echo off X}JWf<=q
echo "Hello, world!" I^0t2[M
KXBL
eR&^
R ZcH+?7
Eiffel 'wQy]zm$
class HELLO_WORLD ]
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mA{#]Yvf1
creation =&NOHT>
make a>Re^GT+z
feature *=nO
make is 2*[Un(
local d?Y-;-|8Qh
io:BASIC_IO B%b_/F]e
do V2`;4d X*2
!!io V,4.$<e
io.put_string("%N Hello, world!") 5j[#'3TSU
end -- make Sb<\-O14"
end -- class HELLO_WORLD _-a|VTM
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u(vw|nj`
Erlang C6k4g75U2
-module(hello). Ee?;i<u
-export([hello_world/0]). (:} <xxl
zHFTCL>"
hello_world() -> io:fwrite("Hello, World!\n"). Wvr+y!F
$pu3Ig$^
G1_Nd2w
Forth K\sbt7~
." Hello, world!" CR EzP#Mnz^
bXl8v
lP0k:
Fortran Ow3a0cF[9
WRITE(*,10) ,C!n}+27
10 FORMAT('Hello, World!') 3X'WR]
STOP eY3=|RR
END |!b9b(_j9
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IQ{?_'
HTML 9t}xXk
<HTML> 8eww7k^R
<HEAD> =HPu{K$
<TITLE> Hello World! </TITLE> a/e\vwHLv
</HEAD> Y+qus
<BODY> TzY!D*%z
<p>Hello World!</p> 6UB6;-
</BODY> Tf l;7w.(A
</HTML> 7|~:P$M
3/tJDb5
q!2<=:f
HQ9+ `E;)`J8b
H AQn[*
22IYrk
%MNk4UsV
INTERCAL ^Jtl;Q
PLEASE DO ,1 <- #13 "`]'ZIx[R/
DO ,1 SUB #1 <- #238 I=b'j5c
DO ,1 SUB #2 <- #112 .\4l'THn,0
DO ,1 SUB #3 <- #112 K{FhT9R'
DO ,1 SUB #4 <- #0 Y UZKle
DO ,1 SUB #5 <- #64 Qdm(q:w
DO ,1 SUB #6 <- #238 lVT&+r~r
DO ,1 SUB #7 <- #26 T{;=#rG<
DO ,1 SUB #8 <- #248 ^je528%H
DO ,1 SUB #9 <- #168 R9E6uz.j
DO ,1 SUB #10 <- #24 `t9.xB#Z
DO ,1 SUB #11 <- #16 Qg{WMlyOP
DO ,1 SUB #12 <- #158 !&0a<~Wi
DO ,1 SUB #13 <- #52
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PLEASE READ OUT ,1 4(sttd_
PLEASE GIVE UP C,='3^Nc
[iXi\Ex
4g'}h`kh
Java ]c,l5u}A$
public class Hello m9b(3
{ o_3*;}k8
public static void main(String[] args) p\ok_*b
{
r4S=I
System.out.println("Hello, world!"); i"fCpkAP
} p.aE
} x!`KhTu`_A
QB9A-U<J
S]b
xQa+
JSP F#^L9
<% EFv4=OWB
out.print("Hello, world!"); -PXoMZx%
%> JQH7ZaN
}_vM&.GFlL
F b2p(.
MIXAL )?9\$^I
TERM EQU 19 the MIX console device number U>1b9G"_
ORIG 1000 start address mR!rn^<l
START OUT MSG(TERM) output data at address MSG l"?]BC~
HLT halt execution E6JV}`hSk
MSG ALF "MIXAL" L3g9b53\
ALF " HELL" V:QdQ;c
ALF "O WOR" `M6YblnJZ
ALF "LD " A_]D~HH
END START end of the program $BaK'7=3*
TL]bY'%
`_0)kdu
Nuva YjL
t&D:IZ
<..直接输出..> W`5a:"Vg
Hello, world! [Q=4P*G}X
m"q/,}DR
<..或者..> z2ds8-z
pbFYiu+
<. 2\,e
// 不带换行 AO^]>/7ed
? "Hello, world!" oM2|]ew)
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// 或者 n'Bmz
a.1`\$]d
// 带换行 <(Tiazg
?? 'Hello, world!' 4^`PiRGt
.> p ^](3Vi(
R^|!^[WE
Jtext%"eNg
OCaml HmFNE$k
let main () = l-Fmn/V
print_endline "Hello world!";; m_(E(_
wJ/~q)
i{P%{hVb
Pascal Q^vGj</u
program Hello; #*+;B93)
begin gfxoJihE
writeln('Hello, world!'); ]u~Os<
end. W.z$a.<(rF
fHLFeSfH
aQxe)
Perl sK#H4y+<
#!/usr/local/bin/perl P`z7@9*j
print "Hello, world!\n"; CJ0$;et
2NyUmJ42
Zb}`sk#
PHP f>|9 l
<?php j`{fB}
print("Hello, world!"); )Kxs@F
?> j1W
bD7*8
33O)k*g
@Ap@m6K?q
Pike +yt 6.L
#!/usr/local/bin/pike 7xz#D4[
int main() |}:e+?{o
{ Zp^)_ 0
write("Hello, world!\n"); LH bZjZ2
return 0; %f_FGh
} tP&{ J^G
7 FEzak'
)iT.A
PL/I eB)UXOu1
Test: procedure options(main); o`oRG)QC
declare My_String char(20) varying initialize('Hello, world!'); 3D{82*&
put skip list(My_String); [kVpzpGr
end Test; b?sAEU;
ZCj>MA
*oKgP8CF
Prolog "r:H5) !
goal (MZ A
write("hello,world!"). MacL3f
[O.LUR;
PY[Sz=[
Python 2=i+L z^
#!/usr/local/bin/python jn0t-":
print "Hello, world!" |G[{{qZM5
]}jgB2x7
.WxFm@]/\
REXX Bk\ *0B
say "Hello, world!" 0=3FO}[u
T^rz!k{
['Hp?Q|k
Ruby /+Wb6{lY
#!/usr/bin/ruby Dh*~U:6$g
print "Hello, world!\n" u]ZqF *
C~3@M<X
a.5zdoH_
Scheme b>GqNf!
(display "Hello, world!") >^M!@=/?J
(newline) mABwM$_
?FkQe~FN{
at_dmU2[7
sed (需要至少一行输入) JrY"J]/
sed -ne '1s/.*/Hello, world!/p' 9{auleu
R
B iVd
ka
8#[%?}tK
Smalltalk AT2NC6{M
Transcript show: 'Hello, world!' 8 /:X&
&
mBYS"[S(
JS<e`#c&
SNOBOL okd
``vG
OUTPUT = "Hello, world!" \9&YV;Ct
END :< KSf#O
p{\qSPK
jM|YW*zNZ
SQL PM#$H
create table MESSAGE (TEXT char(15)); k1~nd=p
insert into MESSAGE (TEXT) values ('Hello, world!'); JKEXYE
select TEXT from MESSAGE; RZcx4fL}x
drop table MESSAGE; RPa?Nv?e
O=4ceEmz
TWl(\<&+)
Tcl ]%vGC^
#!/usr/local/bin/tcl .j'@K+<45
puts "Hello, world!" Z<$E.##
8`R +y
D}k-2RM2k
TScript N,'[:{GOY
? "Hello, world!" r7]?g~zb
mjkw&2
//`cwnjp
Turing a:(: :m
put "Hello, world!" YUP%K!k
Ppi- skT
8Izn'>"
UNIX-style shell V PLCic,T
程序中的/bin/sh可改为您使用的shell b7>,-O
[qjAq@@N#q
#!/bin/sh YiY&;)w
echo 'Hello, world!' 2Be ?5+
zx_O"0{5
-Ib+#pX
GUI auyKLT3C
VDb,$i.Z0
Delphi =0!\F~
program HelloWorld; ;?O883@r8
uses xqi*N13
Dialogs; ]IbPWBX
begin r=iMo7q
ShowMessage('Hello, World!'); @?^LxqAWA
end. 5* o\z&*L
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e!2%k u
Nuva $jUS[.S_|I
<. g~$GE},,
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) @FnI?Rx
.> Ok~W@sYST
7B:ZdDj
:+?W
Visual Basic yjM@/b
MsgBox "Hello, world!" 08d_DCR
'或者 "`$'tk[
Print "Hello, world!" 7/U<\(V!g
s&QBFyKtJ
&Curvc1fm
Visual FoxPro r%m7YwXo
? "Hello, world!" kS\.
4,*^QK
bN7 UO
X11 aJa^~*N/Aa
用一个程序 =p&'_a^$
zb~MF_ &gE
xmessage 'Hello, world!' >`rNT|rg
5E oWyy
用C++和gtkmm 2 HHu7{,
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#include <iostream> !7"K>m<
#include <gtkmm/main.h> 5qtmb4R~
#include <gtkmm/button.h> EV?47\~
#include <gtkmm/window.h> d;NFkA(df
using namespace std; M~{P',l*
s2kZZP8-
class HelloWorld : public Gtk::Window >fZ/09&3
{ \w0b"p
public: wMPw/a;
HelloWorld(); X\$W'^ np
virtual ~HelloWorld(); ;KZtW
protected: fO|~Oz<S
Gtk::Button m_button; 0@FM^ejA#
virtual void on_button_clicked(); e
ka@?`
}; :?:j$
=nWN
,O&PLr8cJ?
HelloWorld::HelloWorld() : m_button("Hello, world!") ^ yukn*L
{ a+>W
set_border_width(10); ?:''VM.
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); mP$G9R
add(m_button); Jr>S/]"
m_button.show(); Vw;ldEdx
} 5c}9
:!iPn%
HelloWorld::~HelloWorld() {} 4xpWO6Q
64\5v?C
void HelloWorld::on_button_clicked() :@@A
{ 1-NX>E5
cout << "Hello, world!" << endl; D>7_P7]y
} l;Wy,?p
,<P[CUD&&
int main (int argc, char *argv[]) *A1TDc$
{ sc $QbO c
Gtk::Main kit(argc, argv); #!d^3iB2
HelloWorld helloworld; R$;&O.
5M
Gtk::Main::run(helloworld); YT(1
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} 9X{nJ"
% 6hw
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Java Ualq>J5-m-
import java.awt.*; o?O,nD
6
import java.awt.event.*; e9_O/i N
C8W`Oly:]
public class HelloFrame extends Frame AIxBZt7{b
{ gUszMhHX
HelloFrame(String title) BQ}.+T\
{ >wS:3$Q
super(title); E#2k|TpH4
} `w=H'"Zv
public void paint(Graphics g) dK;\`>8
{ .kKwdqO+zB
super.paint(g); ~!d)J
java.awt.Insets ins = this.getInsets(); ,S0~:c:)
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); Mm7n?kb6
} q}F%o0
public static void main(String args []) vB YT)S
{ CygV_q
HelloFrame fr = new HelloFrame("Hello"); &P{p\ v2Y
BSu)O~s
fr.addWindowListener( 7fTg97eF
new WindowAdapter() HFx"fT
{ eW*ae;-
public void windowClosing(WindowEvent e) M7<#=pX&
{ @oc%4~zl
System.exit( 0 ); /e?ux ~f|
} HJ1\FO9\
} +$QL0|RL
); S}[:;p?F`
fr.setResizable(true); (DMnwqr
fr.setSize(500, 100); hUhp2ibEs
fr.setVisible(true); j% USu+&
} O9=H
[b
} p,u<gJUL
KIBZQ.uG
c)!s[o L
Java Applet S1= JdN
Java Applet用于HTML文件。 fQ.>G+0I>
zcWxyLifl0
HTML代码: RGA*7
5m7Ax]\
<HTML> I nK)O';
<HEAD> P5xmLefng
<TITLE>Hello World</TITLE> wYMX1=
</HEAD> jzA8f+:q
<BODY> r\ Yur
wY_-
HelloWorld Program says: G{Enh<V
DD$Pr&~=
<APPLET CODE="HelloWorld.class" WIDTH=600 HEIGHT=100> 27 TZ+?
</APPLET> y^46z(I
RrpFi'R
</BODY> "sx&