“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。 XMR$I&;G8
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 WRq:xDRn0
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以下是用不同语言写成的Hello World程序的几个例子: h6yXW!8
Ada
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with Ada.Text_Io; use Ada.Text_Io; :75$e%'A
procedure Hello is gH0'
Ok'
begin 7lC );
Put_Line ("Hello, world!"); )r9lT*z
end Hello; \hm;p
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e d=pRb
汇编语言 =J2cX`
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x86 CPU,DOS,TASM M_:_(y>l
MODEL SMALL 3y[uH'
IDEAL S,=#b
4\#%
STACK 100H AM[#AZv
MR) *Xh
DATASEG JTw< 4]
HW DB 'Hello, world!$' vM.Y/,7S
_7)>/YK?}4
CODESEG B"07:sO
MOV AX, @data vxey$Ir
MOV DS, AX ^AI5SjOUx
MOV DX, OFFSET HW z]^u@]@NC
MOV AH, 09H B8f BX!u/
INT 21H 5$<\
MOV AX, 4C00H sDylSYq
INT 21H (}1:]D{)@V
END :RxWHh3O
i gyTvt!
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x86 CPU,GNU/Linux,NASM q&:UP
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax).
dGNg[
;Enter this into "hello.asm" then type: H}nPaw]G
;"nasm -f elf hello.asm" ;Sc}e/WJj
;"ld hello.o -o hello" zZhAH('fG
;"./hello" oy;g;dtq
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section .data ;data section declaration jMpV c
E#
msg db 'Hello World!',0AH Hv>16W$_
len equ $-msg ;string length I}Fv4wlZG
rryC^Vma
section .text ;code section declaration 8Hdm(>
global _start ;entry point (start of execution) w;p:4`
_start: mov edx,len ;string length 4YT d
mov ecx,msg ;string start }#b[@3/T
mov ebx,1 ;file handle: stdout mmJ$+$JEk
mov eax,4 ;sys_write 4@Q`8N.
int 80h ;kernel system call ! U6 x_
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mov ebx,0 ;return value d'x'hp%
mov eax,1 ;sys_exit wa)E.(x
int 80h ;kernel system call (>LJv |wn
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++m^z` D
x86 CPU,Windows,MASM32 lCX*Q{s22
.386 )zKZ<;#y
.model flat,stdcall 4P>4d +
option casemap:none )Rlh[Y& r
;Include 文件定义 1 m>x5Dbk!
include windows.inc ^z _m<&r
include user32.inc # },4m
includelib user32.lib kT=KxS{
include kernel32.inc R)>F*GsR
includelib kernel32.lib ?}n\&|+
;数据段 &nRbI:R
.data qgk-[zW#
szCaption db 'A MessageBox!',0 =!~6RwwwY
szText db 'Hello,world!',0 odm!}stus
;代码段 c9
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.code {SQ#n@Q&$
start: d:_3V rRZ
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK /'ukeK+'
invoke ExitProcess,NULL Jtv~n
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> g]ct6-m
end start a%IJ8t+mn
BM }{};p6
}OJ,<!v2pc
AWK 4D4Y.g_x
BEGIN { print "Hello, world!" } G]$.bq[v
}(yX$ 3?`
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BASIC 1 p|h\H
传统版BASIC(例如GWBASIC): WlF}R\N!
T\
cJn>kCn
10 PRINT "Hello, world!" Cb1fTl%
20 END v)!C
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^&Re-{ES]
或在提示符输入: ,lUroO^^
w]&
o]VP
?"Hello, world!":END ({5`C dVi
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现代版BASIC(例如Quick BASIC): Jq1^}1P
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Print "Hello, world!" (H*EZ
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以下的语句在Quick BASIC中同样有效: Z7Gl^4zn
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? "Hello,world!" [3~mil3rO
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~R$Ko(N
BCPL pAY[XN
GET "LIBHDR" o=}vK[0u
yf/c
LET START () BE vr$zYdV>
$( sT;:V
WRITES ("Hello, world!*N") !ot$ Q
$) ?%]?#4bkc
tw*n+{]hi
Cbq|<p# #o
Befunge Z4ZR]eD
"!dlrow olleH">v Ed^F_Gg#
, pn._u`xMV
^_@ Fb^Ae6/i
$YPQi.
x392uS$#
Brainfuck <:YD.zAh|
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< G^6\ OOSy
+++++++++++++++.>.+++.------.--------.>+.>. D$vP&7pOr4
\U\k$ (
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C .zM M!l3
#include <stdio.h> F,NS:mE
'a6:3*
int main(void) $1ZFkw
{ *qN(_
printf("Hello, world!\n"); uA1DTr?z
return 0; @0qDhv s
} yrgb6)]nm@
HEMq4v4
)`V__^
C++ t%'0uB#v1
#include <iostream> }2;{}J
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int main() 1oVjx_I5y
{ L74Sx0nk=
std::cout << "Hello, world!" << std::endl; 28jm*Cl8
return 0; L(ni6-
} Q=!f,
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I,Z'ed..
C++/CLI `JrvD
int main() ;xl_9Ht/
{ noLb
System::Console::WriteLine("Hello, world!"); rjJ-ZRs\
} v."0igMO
P?Fm<s:
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C# (C Sharp) /EXubU73
class HelloWorldApp {W5D)
{ l*0`{R
public static void Main() TXDb5ZCzM
{ j1hx{P'
System.Console.WriteLine("Hello, world!"); CNRiK;nQ
} ,VTX7vaH
} j}devpO
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<e%~K4KH
COBOL H5'Le{
IDENTIFICATION DIVISION. Dn9AOi!
PROGRAM-ID. HELLO-WORLD. /[|ODfY
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ENVIRONMENT DIVISION. rcyq+wY #
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DATA DIVISION. &8^1:CcE
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PROCEDURE DIVISION. 4 -dV%DgC
DISPLAY "Hello, world!". {k#RWDespy
STOP RUN. 4\?GA`@
-?K?P=B;X
?{bAyh/
Common Lisp MGGc
(format t "Hello world!~%") e52y}'L
$sTvXf:g
4CdST3
DOS批处理 |n_es)A
@echo off `Y5{opG7-
echo "Hello, world!" a|s64+
HN j6Iw
/j`vN
Eiffel f|&ga'5g&
class HELLO_WORLD iOO1\9{@
=C[2"Y4JK0
creation Nsd7?|@HI
make (H*d">`mz
feature y,OwO4+y\
make is g\n0v~T+
local @jp}WwC/
io:BASIC_IO eK]$8l|LI
do WV8?zB1
!!io lW8!_h"G`n
io.put_string("%N Hello, world!") ]PI|Xl
end -- make !]v &/
end -- class HELLO_WORLD NxyrP**j
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~_YU%y
Erlang YhzDi>hob
-module(hello). w=txSF&Qr
-export([hello_world/0]). IRxFcLk
1Z+\>~8
hello_world() -> io:fwrite("Hello, World!\n"). =rrbS8To=
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wB0zFlP
Forth .vbUv3NI
." Hello, world!" CR (6WSQqp
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O [81nlhS0
Fortran Q.N, Q`P
WRITE(*,10) =?, dX
10 FORMAT('Hello, World!') \s[/{3
STOP ]DaC??%w
END \~YyY'J
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hR] AUH
HTML ~D9VjXfL)
<HTML> )=
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<HEAD> &>Ko}?w
<TITLE> Hello World! </TITLE> J6)&b7
</HEAD> mOUIGlv
<BODY> GG}(*pOr
<p>Hello World!</p> u7Xr!d+wR
</BODY> #78P_{#!
</HTML> s|1BqoE
6,C,LT2^(
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HQ9+ ;goR0PN
H U;_b4S:
g7|$JevR0
r:&"#F
INTERCAL V@(7K0
PLEASE DO ,1 <- #13 ARZ5r48)
DO ,1 SUB #1 <- #238 $|2@of.
DO ,1 SUB #2 <- #112 0F\e*{gc
DO ,1 SUB #3 <- #112 @"`{gdB$
DO ,1 SUB #4 <- #0 x*9CK8o=
DO ,1 SUB #5 <- #64 dX58nJ4u
DO ,1 SUB #6 <- #238 '|\et aD
DO ,1 SUB #7 <- #26 R`RLq1WA
DO ,1 SUB #8 <- #248 gyI(O>e
DO ,1 SUB #9 <- #168 v GF<
DO ,1 SUB #10 <- #24 ~[mAv#d&i
DO ,1 SUB #11 <- #16 L-LN+6r(#
DO ,1 SUB #12 <- #158 n tfwR#j
DO ,1 SUB #13 <- #52 Vo\RtM/6{
PLEASE READ OUT ,1 XQ{G)
PLEASE GIVE UP v%e-vl
2nQrCdRC
sc2nLyn$
Java G2nL#l~@)
public class Hello }Ot
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{ G$5N8k[2
public static void main(String[] args) fCMH<}w
{ .=VtMi$n
System.out.println("Hello, world!"); fDn| o"
} Ua@rp3fr
} o@o6<OP^
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~9:ILCfX
JSP h9McC 3
<% Qr/8kWa0C
out.print("Hello, world!"); 86^xq#+Uw
%> fC2
Qe!Q
$
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MIXAL da[u@eNrnX
TERM EQU 19 the MIX console device number :\*<EIk(
ORIG 1000 start address ,6zH;fi
START OUT MSG(TERM) output data at address MSG }@*Me+
HLT halt execution GnE%C2L-
MSG ALF "MIXAL" `>1"v9eF
ALF " HELL" idC4yH42
ALF "O WOR" K8`M~P.
ALF "LD " x*~a{M,h
END START end of the program 3sk$B%a>Z
U#O6l-xe]
(;V=A4F-D
Nuva w>IYrSaa>
<..直接输出..> FT1h\K|a
Hello, world! _l&`*
2d
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<..或者..> uhuwQS=X
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<. ~h~K"GbC?
// 不带换行 W |]24
? "Hello, world!" Y2
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// 或者 S^@I4Z
K)Nbl^6x
// 带换行 N#;k;Z'iL
?? 'Hello, world!' v5|X=B>&>
.> y@;4F n/
oh '\,zpL
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OCaml 1Ftl1uf
let main () = c3gy{:lb
print_endline "Hello world!";; M-!eL<
41<.e`{
zfE;)K^"
Pascal t5z6{`
program Hello; `L(AvSR
begin O jkbv
writeln('Hello, world!'); ^|6%~jkD5
end. W^2Q"c#7F
~RVx~hh
t6;Ln().Hw
Perl `x"0
#!/usr/local/bin/perl zaX!f~;"
print "Hello, world!\n"; A#W%ud4
71+J{XOC
GNXQD}L?b?
PHP TxhTK5#f
<?php //G5lW/*
print("Hello, world!"); jfyV9)
?> zh$[UdY6
[=Wn7cr
p6(n\eg R
Pike % Ke:%##Y
#!/usr/local/bin/pike L&qzX)
int main() DRD%pm(
{ ;T}#-`O_Im
write("Hello, world!\n"); }Po&6^
return 0; Yn,dM~|Cc
} =KwG;25hX
30Nya$$A=
J!,5HJh1
PL/I ]6{G;f$
Test: procedure options(main); jNN$/ZWm
declare My_String char(20) varying initialize('Hello, world!'); I"E5XVC);
put skip list(My_String); NDhHU#Q9
end Test; w$H=GF?"
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rMqWXGl`(
Prolog g2 uc+p
goal x%ZjGDF m
write("hello,world!"). "sz)~Q'W5
dL>0"UN}-
b0]y$*{j
Python H~+D2A
#!/usr/local/bin/python "4LYqDe
print "Hello, world!" xtKWh`[&
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PA"xb3@I
REXX u0h {bu
say "Hello, world!" 2RKI M(~
CD(2A,u)/
GmN} +(
Ruby FqiCzP4
#!/usr/bin/ruby -san%H'
print "Hello, world!\n" 7t\W{y
]yN]^%PYH
5tR<aIf
Scheme 6a PZW
(display "Hello, world!") %FGPsHH
(newline) F ]\4<
i/*&;
\cvui^^n
sed (需要至少一行输入) @*L^Jgn
sed -ne '1s/.*/Hello, world!/p' .O'S@ %]
)cB00*/
e J>(SkR:[
Smalltalk |sHIT<=m
Transcript show: 'Hello, world!' .x$+7$G
nH*U
vk+TWf
SNOBOL zT0rvz1),M
OUTPUT = "Hello, world!" +o)S.a+7
END aT"q}UTK
=LuH:VM&
yowvq4e
SQL fR!'i):u
create table MESSAGE (TEXT char(15)); R{kZKD=
insert into MESSAGE (TEXT) values ('Hello, world!'); wQ[~7 ,o
select TEXT from MESSAGE; b mZRCvW>A
drop table MESSAGE; 5bGV91
V@<tIui$
5KU}dw>*g
Tcl 13s!gwE)
#!/usr/local/bin/tcl AV AF!Z
puts "Hello, world!" q~.\NKc
Q4-d2I>0
qHg\n)R"x!
TScript T30!'F(*,
? "Hello, world!" URmx8=q
gKcP\m
"ji4xy
Turing 4(2}O-~
put "Hello, world!" (w?@qs!
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83:m7;
UNIX-style shell }Gr5TDiV0\
程序中的/bin/sh可改为您使用的shell !)ey~Suh
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#!/bin/sh aB-*l
%x
echo 'Hello, world!' :x]gTZ?
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/K<Xr[z~y
GUI ^10*s,(uS?
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Delphi
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program HelloWorld; VR2BdfKU,
uses i 4lR$]@
Dialogs; WZdA<<,:o
begin 8(q4D K\5u
ShowMessage('Hello, World!'); zm\=4^X
end. w<&Nn`V
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4vPQuk!
Nuva a*6x^R;)
<. O*rKV2\
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) :}FMauHh
.> $jo}?Y+
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Pe!uk4}w
Visual Basic SoS[yr
MsgBox "Hello, world!" %#2[3N{
'或者 .RH}/D
Print "Hello, world!" x "]%q^x
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e(x1w&8dB
Visual FoxPro /cexd_l|f
? "Hello, world!" yAG4W[
:)t1>y>3
Qr1%"^4
X11 ? QwDV`
用一个程序 Fl]$ql
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xmessage 'Hello, world!' U:c!9uhp
kM*f9x
用C++和gtkmm 2 ,'m<um
oOBN
#include <iostream> lLxKC7b
#include <gtkmm/main.h> cgc|G
#include <gtkmm/button.h> ~EW
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#include <gtkmm/window.h> + B%fp*
using namespace std; nYY@+%`]z
\gki!!HQ
class HelloWorld : public Gtk::Window {$bAs9L
{ (ScL C
public: Xgn^)+V:
HelloWorld(); w'~f Z*
virtual ~HelloWorld(); "X's>uM
protected: >e($T!}Z
Gtk::Button m_button; :g}WN
virtual void on_button_clicked(); Ti#2D3
}; ,E$^i~OO
X_Is#&6;
HelloWorld::HelloWorld() : m_button("Hello, world!") &48wa^d
{ *I(>[m!
set_border_width(10); [m?eSq6e2b
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); {[61LQ6V9
add(m_button); UMpC2)5
m_button.show(); :R{Xd{?
} Ra&HzK?
`n
Y!nh6!
HelloWorld::~HelloWorld() {} eEb(TG~,Y
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void HelloWorld::on_button_clicked() i*#Gq6qZq
{ Eh#W*Bg
cout << "Hello, world!" << endl; !F/;WjHz
} YU9xAN i6
M,8a$Mdqh
int main (int argc, char *argv[]) K:c5Yq^
{ lV]hjt-L
2
Gtk::Main kit(argc, argv); lJpD>\$}@R
HelloWorld helloworld; ~zi6wu(3
Gtk::Main::run(helloworld); @ >%I\
} &=nwb4
Uxn_nh
~4.Tq{
Java pi q%b]
import java.awt.*; I?lQN$A.E
import java.awt.event.*; GQ[:vX`
E[/<AY^@!z
public class HelloFrame extends Frame UaiDo"i
{ qtnLQl"M
HelloFrame(String title) QK&<im-
{ 7C9qkQ
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super(title); Yl% Ra1
} O`g44LW2n
public void paint(Graphics g) i{I'+%~R
{ *Tl"~)'t~
super.paint(g); zq80}5%2CT
java.awt.Insets ins = this.getInsets(); RvZi %)
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); K%[Rv#>;q|
} vE;`y46&r
public static void main(String args []) H|tbwU)J
{ z
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HelloFrame fr = new HelloFrame("Hello"); cAM1\3HWT"
'M=(5p
fr.addWindowListener( w [I%Id;E
new WindowAdapter() 8|.(Y
{ HB\<nK
public void windowClosing(WindowEvent e) (^ZC8)0i(
{ aAh")B2
System.exit( 0 ); c|X.&<lX
} q@~N?$>
} -A(]",*J
); 1 9$ufod
fr.setResizable(true); puG$\D-[
fr.setSize(500, 100); ^6Q(he
fr.setVisible(true); /FJAI
} KXL]Qw FN
} y>'^<xk
OthQ)&pqX
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Java Applet #.$p7]
Java Applet用于HTML文件。 rtS(iD@B"
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HTML代码:
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<HTML> x|<rt966A
<HEAD> /(8Usu?g.
<TITLE>Hello World</TITLE> tQ< ou,
</HEAD> T)6p,l
<BODY> BEPeK
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HelloWorld Program says: 3v
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lsCD%P
<APPLET CODE="HelloWorld.class" WIDTH=600 HEIGHT=100> wA|m/SZx
</APPLET> 0R\lm<&
)}\jbh>RH
</BODY> ;hA>?o_i(
</HTML> ^&am