“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。 Vdb X4^V
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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》。 3\?yjL^
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以下是用不同语言写成的Hello World程序的几个例子: 6hf6Z3
Ada TE@bV9a
with Ada.Text_Io; use Ada.Text_Io; fsV_>5I6
procedure Hello is *|.-y->
begin a(K^/BT
Put_Line ("Hello, world!"); NfXEW-
end Hello; oedLe9!
e`t-:~'
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汇编语言 f5vsxP)Y[
x4/f5
x86 CPU,DOS,TASM \`|OAC0a
MODEL SMALL B&z~}lL
IDEAL F'JceU
STACK 100H a*{ -r]
1y6{3AZm<
DATASEG 5H/D~hr&
HW DB 'Hello, world!$' 3/RNStd<L!
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CODESEG JrwR:_+|
MOV AX, @data y(=$z/
MOV DS, AX E3 aj
MOV DX, OFFSET HW m 3"|$0C~
MOV AH, 09H Tf.DFfV#y
INT 21H Yi#U~ h
MOV AX, 4C00H FSkz[D_}
INT 21H McRfEF\
END njBK {
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W4S! rU
x86 CPU,GNU/Linux,NASM zr1A4%S"
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). *ta?7uSiT
;Enter this into "hello.asm" then type: @SH$QUM(
;"nasm -f elf hello.asm" Wt9'-"c
;"ld hello.o -o hello" 7G
&I]>
;"./hello" @LR :^>&*
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section .data ;data section declaration y[I)hSD=
msg db 'Hello World!',0AH 6%fF6
len equ $-msg ;string length tF~D!t@
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section .text ;code section declaration U9:I"f,
global _start ;entry point (start of execution) }^n346^
_start: mov edx,len ;string length n_MY69W
mov ecx,msg ;string start 9*j$U$:'
mov ebx,1 ;file handle: stdout GGkU$qp2~
mov eax,4 ;sys_write i>=!6Hu2
int 80h ;kernel system call 05/'qf7P,U
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mov ebx,0 ;return value :6y;U
mov eax,1 ;sys_exit Gq9pJ
int 80h ;kernel system call v0'`K 5M
"/qm,$
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x86 CPU,Windows,MASM32 PuGc{kt
.386 Kz2s{y~?
.model flat,stdcall s|o+
Im
option casemap:none h][$1b&B
;Include 文件定义 %g{<EuK]p
include windows.inc gP:H_nVh
include user32.inc y:ad%,. C
includelib user32.lib ~SR9*<
include kernel32.inc >m4Q*a4M
includelib kernel32.lib 2mfKy9QxO
;数据段 O}mz@-Z
.data 7':qx}c#!1
szCaption db 'A MessageBox!',0 kr>H,%3~
szText db 'Hello,world!',0 pF}WMt
;代码段 zJX _EO
.code Zsx\GeE%:
start: KkD&|&!Q7u
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK C`r{B.t`GT
invoke ExitProcess,NULL K%RjWX=H
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> U@<]>.$
end start U6yZKK
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AWK 'fr~1pmx#3
BEGIN { print "Hello, world!" }
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BASIC iFkXt<_A
传统版BASIC(例如GWBASIC): V"DilV$v
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10 PRINT "Hello, world!" Va3/#is'
20 END 8a,pDE
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或在提示符输入: JJVdq-k+`
#f-pkeaeq
?"Hello, world!":END r`5svY
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现代版BASIC(例如Quick BASIC): VFLW@
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Print "Hello, world!" mo
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以下的语句在Quick BASIC中同样有效: Hh{pp ^
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? "Hello,world!" o#=@!m
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B`?}jJa9*
BCPL }`^DO
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GET "LIBHDR" "z9 p(|oZ
uwo\FI
LET START () BE EaUO>S
$( #d;/Me
WRITES ("Hello, world!*N") 4"~l^yK
$) ^< wn
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Befunge bTbF
"!dlrow olleH">v 32x[6"T
, \k>1q/T0V
^_@ `|WEzW~
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L. DD
Brainfuck +\)a p
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Y=\:fa
+++++++++++++++.>.+++.------.--------.>+.>. KuJNKuHa.
2 pmqP-pKd
8~ wP?
C br%l>Y\"
#include <stdio.h> %:e.ES
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int main(void) o9]i
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{ Ci_Qra 6
printf("Hello, world!\n"); 8T?D#,/
return 0; CWa~~h<r-
} B!1Bg9D
NE4 }!I
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C++ Ge1b_?L_
#include <iostream> EFn[[<&><t
bZW dd6
int main() |qz&d=>
{ {@ Z=b5/P
std::cout << "Hello, world!" << std::endl; oe<DP7e
return 0; a4\j.(w)$D
} E{BX $R_8
2Og<e|
,#U[)}im
C++/CLI W^YaC
(I
int main() 8F9x2CM-[C
{ ve^gzE$<I
System::Console::WriteLine("Hello, world!"); yS1i$[JV
} NOFuX9/'w
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}inV)QQ
C# (C Sharp) C`qE ,2.
class HelloWorldApp ,Q<mU4
{ ~'v9/I-"
public static void Main() 7j8lhrM}^
{ 53WCF[
System.Console.WriteLine("Hello, world!"); __Zex5Y#-
}
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} qPBOt;N
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nrg$V>pD
COBOL "p]!="\
IDENTIFICATION DIVISION. 7~Z(dTdSG
PROGRAM-ID. HELLO-WORLD. (0E<Fz
V
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ENVIRONMENT DIVISION. nh*6`5yj
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DATA DIVISION. ZI.Czzx\=
+Jh1D_+!9
PROCEDURE DIVISION. }0,dG4Oo=
DISPLAY "Hello, world!". 7n,=`0{r
STOP RUN. Y_)xytJ$
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q_cP<2`@V
Common Lisp 1my1m
(format t "Hello world!~%") 8SA"
bH:
+o?;7
n8tw8o%&[
DOS批处理 +Fb+dU
@echo off %n6NVi_[
echo "Hello, world!" /@B2-.w
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Eiffel :b]
\*
class HELLO_WORLD \FIM'EKzu!
u\;d^A
creation b]
make sI.p(
-KQ
feature 0O[le*3b
make is YSrjg|k*
local &\%\"Zh
io:BASIC_IO ""A6n{4
do [bw1!X3
!!io O?ODfO+>
io.put_string("%N Hello, world!") g(9kc<`3'D
end -- make $[Q;{Q
end -- class HELLO_WORLD #Vu;R5GZ}
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C]Y%dQh+a
Erlang %o5'M^U
-module(hello). iI>7I<_
-export([hello_world/0]). =3ovaP
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hello_world() -> io:fwrite("Hello, World!\n"). [(eX\kL
=X9fn
m/"([Y_
Forth -y>~ :.
." Hello, world!" CR <<b]v I
+#\7
#Y
ex
BLj
*]
Fortran ?GlXxx=eV
WRITE(*,10) W*%(J$E
10 FORMAT('Hello, World!') ]&N>F8.L+
STOP TB-dV'w
END XhA tf@n
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,"Fl/AjO
HTML Y'5(exW
<HTML> KaX*) P
<HEAD> Paeq
<TITLE> Hello World! </TITLE> g)R 2V
</HEAD> N6v?Qzvi
<BODY> cg o
<p>Hello World!</p> &>B"/z
</BODY> 8Ihl}aguW
</HTML> e"_kH_7sv
JEaTDV_
d14 n>
HQ9+ G$2@N6
H Oxa8u e?
>c Lh$;l
no W]E}nN
INTERCAL |}.}q
PLEASE DO ,1 <- #13 zvVo-{6
DO ,1 SUB #1 <- #238 t0GJ$])
DO ,1 SUB #2 <- #112 f%i%QZP
DO ,1 SUB #3 <- #112 K7([Gc9
DO ,1 SUB #4 <- #0 M9""(`U
DO ,1 SUB #5 <- #64 ;b:'i&r
DO ,1 SUB #6 <- #238 5\=
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DO ,1 SUB #7 <- #26 N.H<'Q8&
DO ,1 SUB #8 <- #248 /&<V5?1|
DO ,1 SUB #9 <- #168 !/!ga)Y
DO ,1 SUB #10 <- #24 _6V1oe2
DO ,1 SUB #11 <- #16 iEZ+Znon
DO ,1 SUB #12 <- #158 m[KmXPFht1
DO ,1 SUB #13 <- #52 JXMH7
PLEASE READ OUT ,1 vS)>g4
PLEASE GIVE UP 1;H"4u_IG&
*c [^/
J8i,[,KcE
Java ~\8(+qIv%f
public class Hello i/skU9
{ 1.+6x4%rV
public static void main(String[] args) BjagG/sX
{ co3\1[q"b
System.out.println("Hello, world!"); ;-XfbqZ\
} J{.UUw9Agd
} \1LfDlQk)
o<%0|n_O&
^!d0abA
JSP f*B-aj#
<% yi*EobP
out.print("Hello, world!"); A= 5Ebu!z
%> R^$|D)(
;Xy=;Z.]i
2,F9P+
MIXAL '5 ~cd
TERM EQU 19 the MIX console device number as|w} $
ORIG 1000 start address PCHspe9!y
START OUT MSG(TERM) output data at address MSG )Z:D}r8[
HLT halt execution `:;q4zij;
MSG ALF "MIXAL" /.<v,CR
ALF " HELL" Y#XRn_2D
ALF "O WOR" ~mARgv
ALF "LD " 9$Z0mz k
END START end of the program CUYA:R<)
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Nuva Zi.' V
<..直接输出..> $\Y&2&1s
Hello, world! pITF%J@_]
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<..或者..> J
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<. I](a 5i
// 不带换行 C[G+SA1&W
? "Hello, world!" UUlz3"`
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// 或者 &v0-$
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// 带换行 M@{#yEP
?? 'Hello, world!' P|bow+4
.> |Z<\k x
n)98NSVDbT
,`Y$}"M4
OCaml "mf$E|
let main () = jt on \9
print_endline "Hello world!";; ESIP+
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*k}m?;esb
Pascal ?nGi if
program Hello; MCmb/.&wu
begin xdm \[s
writeln('Hello, world!'); wuA?t
end. gK`w|kh`
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o~IAZU39
Perl ~qrSHn}+PU
#!/usr/local/bin/perl e))L&s
print "Hello, world!\n"; 3@Mh* \;\b
{9U!0h-2"
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PHP [jzsB:;XB&
<?php O*~z@"\
print("Hello, world!"); _(F-(X|
?> )6C+0b*
pWGR#x'
]`|$nU}v
Pike w,LmAWZ4Y
#!/usr/local/bin/pike eKvr1m- -
int main() 0_gN]>,9n
{ )*;Tt @'y
write("Hello, world!\n"); 5'I+%66?h$
return 0; Giv,%3'
} %7 bd}sJ#
M`H#Qo5/
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PL/I #`*uX6C
Test: procedure options(main); j#n ]q{s4
declare My_String char(20) varying initialize('Hello, world!'); jU j\<aW
put skip list(My_String); P3&s<mh
end Test; ORs:S$Nt$
1+;bd'Ie
}}=n]_f
Prolog E]OexRJ^i
goal /'rj L<M
write("hello,world!"). 'K ?h6?#
*#mmk1`
(BVqmi{
Python C
e-ru)
#!/usr/local/bin/python -[7+g
print "Hello, world!" (XO=W+<'
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>
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REXX 5qtk#FB
say "Hello, world!" j%Au0k
rUb{iU;~m
1'E=R0`pA
Ruby kg7F8($
#!/usr/bin/ruby w*VN=
print "Hello, world!\n" _YF>Y=D-
i-OD"5a`
c,~uurVi
Scheme bkV<ZUW|;
(display "Hello, world!") >zW2w2O3
(newline) j~-N2b6z
xSmG,}3mF
k4K.
mlIO
sed (需要至少一行输入) avRtYL
sed -ne '1s/.*/Hello, world!/p' cAW}a
-qIi.]/f"9
UA6id|G
Smalltalk aj&L
Z DD6
Transcript show: 'Hello, world!' .dlsiBh
+;KUL6
6dIPgie3w
SNOBOL OX7=g$S 1
OUTPUT = "Hello, world!" hu}$ \
END pWV_KS
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=
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SQL }HoCfiE=X
create table MESSAGE (TEXT char(15)); e'3V4iU]
insert into MESSAGE (TEXT) values ('Hello, world!'); ="voJgvw
select TEXT from MESSAGE; Tz @=N] D
drop table MESSAGE; J?8Mo=UZz
BIWe Hx
W@T\i2r$z
Tcl {cXr!N^K
#!/usr/local/bin/tcl &>JP.//spi
puts "Hello, world!" QoZV6
lmeTW0U@9(
tAAMSb9[d
TScript n~I-mR)"
? "Hello, world!" Z}+}X|
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{<,%_pJR
Turing r].n=455[
put "Hello, world!" ~7PD/dre
#f2Ot<#-
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UNIX-style shell JsJP%'^/R
程序中的/bin/sh可改为您使用的shell MGR:IOTa
Dkz/hg:q
#!/bin/sh YRu@;
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echo 'Hello, world!' yvYMk(LSF
f% pT-#
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GUI f{P1.?a
Jl{ 0q7b
Delphi nI*.(+h
program HelloWorld; <fUo@]Lv
uses S^rf^%
Dialogs; Cyg2o<O@
begin ) E^S+ps
ShowMessage('Hello, World!'); [YOH'i&X
end. Z`S#> o
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b#_RZ
Nuva 2ioHhcYdJU
<. A=N$5ZJ
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) +RooU?Aq
.> N:lfKI
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z?o8h
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Visual Basic X8)k'h
MsgBox "Hello, world!" 4IeCb?
'或者 =)Xj[NNRT
Print "Hello, world!" g:Hj1!'
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xKUL}>8
Visual FoxPro 2%%\jlT_
? "Hello, world!" =]7o+L4
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rwP#Yj[BK+
X11 I"Zp^j
用一个程序 K<>kT4
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xmessage 'Hello, world!' h4;kjr}h}
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96
用C++和gtkmm 2 FNQ<k[#K'~
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#include <iostream>
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#include <gtkmm/main.h> nfEbu4|
#include <gtkmm/button.h> "hk#pQ
#include <gtkmm/window.h> F1Z'tjj+
using namespace std; LF7-??'
oZBD.s
class HelloWorld : public Gtk::Window ^ij0<*ca9
{ bZ`v1d
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public: K%z!#RyJ4
HelloWorld(); @]Cg5QW>T
virtual ~HelloWorld(); cN,*QN
protected: }3#\vn0gT
Gtk::Button m_button; 4XpWDfa.}
virtual void on_button_clicked(); BSm"]!D8*
}; 2k.VTGak
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HelloWorld::HelloWorld() : m_button("Hello, world!") rB[J*5v
{ !Z$d<~Mq q
set_border_width(10); JEto_&8,C
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); N~)-\T:ap
add(m_button); `zQuhD 8W
m_button.show(); Y1PR?c
Q
} bzi"7%c
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HelloWorld::~HelloWorld() {} s=8H<'l
v)
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void HelloWorld::on_button_clicked() s$M(-"mg
{ '09|Y#F
cout << "Hello, world!" << endl; (y9KO56.V&
} dFz"wvu` o
9?l a5
int main (int argc, char *argv[]) &S >{9y%
{ zdYH9d>D
Gtk::Main kit(argc, argv); p2STy\CS
HelloWorld helloworld; 8V:;HY#
Gtk::Main::run(helloworld); <C`bf$ak
} EFX2>&mWo8
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J^7m?mA
Java Dz }i-tw+
import java.awt.*; tMl y*E
import java.awt.event.*; Bu:%trlgV
Ln>!4i+-B)
public class HelloFrame extends Frame -@> {q/
{ w#.3na
HelloFrame(String title) "Z@P&jl
{ #T7v]@K67
super(title);
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} R$&;
public void paint(Graphics g) 5Kzt8Tv[
{ B!RfPk1B<*
super.paint(g); u zZ|0
java.awt.Insets ins = this.getInsets(); U^PXpNQ'
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); 3%POTAw%
} Y|tHU'x
public static void main(String args []) `D+zX
{ Olzw)WjG
HelloFrame fr = new HelloFrame("Hello"); E+L7[
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fr.addWindowListener( 2
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new WindowAdapter() qk& F>6<9*
{ {hS!IOM
public void windowClosing(WindowEvent e) +<bj}"
{ N3G9o`k
System.exit( 0 ); ASXGM0t
} LHY7_"u#
} $?GggP d
); SEgw!2H
fr.setResizable(true); <nk|Z'G E
fr.setSize(500, 100); Nc+0_|,
fr.setVisible(true); >G`p T#
} hUMG}<
} c9/w{}F
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Java Applet s<