“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。 O&,8X-Ix
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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》。 Fm*npK
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以下是用不同语言写成的Hello World程序的几个例子: z"Mk(d@-E
Ada [v\m)5
with Ada.Text_Io; use Ada.Text_Io; <~uzKs0
procedure Hello is Q!_d6-*u
begin SmIcqM
Put_Line ("Hello, world!"); 4]6-)RHFB
end Hello; <>728;/C
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@_1cY#!
汇编语言 T"<)B^8f
7Gy:T47T\@
x86 CPU,DOS,TASM 'u~0rMe4})
MODEL SMALL J_?v=dW`
IDEAL :Qhrh(i
STACK 100H 7*"Jx}eM
5JHEBw5W%
DATASEG MdmN7>
HW DB 'Hello, world!$' !#=3>\np+X
X-#&]^d
CODESEG V1~@
MOV AX, @data m xqY
MOV DS, AX <'N:K@Cs
MOV DX, OFFSET HW *ifz@8C }
MOV AH, 09H 5{Q9n{dOh
INT 21H p4
=/rkq
MOV AX, 4C00H :q?#$?
INT 21H e.~11bx
END K6sXw[VC[
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57-Hx;
x86 CPU,GNU/Linux,NASM 0[e!/*_V
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 6?;z\AP&
;Enter this into "hello.asm" then type: Ih>s2nL
;"nasm -f elf hello.asm" )Yv=:+f
;"ld hello.o -o hello" 5n{d jP
;"./hello" 3bYjW=_hA
Z&U:KrFH
section .data ;data section declaration M&/%qF15
msg db 'Hello World!',0AH ?{e}ouKYX1
len equ $-msg ;string length @`dlhz
*@H\J e`
section .text ;code section declaration tRZ4\Bu
global _start ;entry point (start of execution) K/K-u
_start: mov edx,len ;string length I]E 3&gnC
mov ecx,msg ;string start Q$v00z]f*
mov ebx,1 ;file handle: stdout -J8Hsqf@
mov eax,4 ;sys_write {/H<_
int 80h ;kernel system call =*"8N-FU
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mov ebx,0 ;return value %qiVbm0
mov eax,1 ;sys_exit +vaA
P=
int 80h ;kernel system call Ikw@B)0}
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],k~t5+
x86 CPU,Windows,MASM32 7eAV2.
.386 9@yF7
.model flat,stdcall sRA2O/yKCE
option casemap:none rQyjNh
;Include 文件定义 N9-7YQ`D
include windows.inc -z0;4O (K]
include user32.inc G}9f/$'3
includelib user32.lib c!/+0[
include kernel32.inc X6r0+D5AvB
includelib kernel32.lib !ltq@8#_|
;数据段 QA*<$v
.data <|jh3Hlp
szCaption db 'A MessageBox!',0 <r.QS[:h
szText db 'Hello,world!',0 owQ,op#
;代码段 IEMa/[n/
.code .
ump?
M
start: ?5J#
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 5l
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invoke ExitProcess,NULL ]B?M3`'>
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> [`t ;or
end start V`1{*PrI@L
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6]Is"3ca
AWK ^n(FO,8c
BEGIN { print "Hello, world!" } D2kmBZ3
uVCH<6Cp
Z|%h-~
BASIC _X~O6e-!
传统版BASIC(例如GWBASIC): (8)9S6
4&sf{tI
10 PRINT "Hello, world!" ?'z/S5&j
20 END CV.|~K0O
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或在提示符输入: fy4zBI@
Q_|}~4_+
?"Hello, world!":END 8c+V$rH_
C| ~A]wc=
现代版BASIC(例如Quick BASIC): 2cH RiRT
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Print "Hello, world!" A5TSbW']+5
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以下的语句在Quick BASIC中同样有效: '<BLkr# @
t]@>kAA>2L
? "Hello,world!" j<*7p:L7_>
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$Dj8 a\L
BCPL YM:sLeQ~c
GET "LIBHDR" 5@m
,*n&[
]690ey$E:j
LET START () BE SL- 2 ^\R
$( HS/.H,X
WRITES ("Hello, world!*N") .Y;f9R
$) _ZK^JS
`\62 iUN
qBX_v5pvVA
Befunge f7~dn#<@
"!dlrow olleH">v 'E3T fM
, 1vj@qw3
^_@ 4d5c]%
aC\f;&P>
z&amYwQcI
Brainfuck 9 A ?{}c
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< =wdh#{
+++++++++++++++.>.+++.------.--------.>+.>. t.28IHJ
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C S3ooG1 4Ls
#include <stdio.h> eV|N@
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int main(void) 4@@Sh`E:
{ Vb`Vp(>AU
printf("Hello, world!\n"); J 7R(X
return 0; J&>@>47
} 6+IhI?lI=
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@/.#
/
C++ ?f"5yQ-B
#include <iostream> TjTG+uQ
sip4,>,E
int main() G|rE\h 2w
{ :@[\(:
std::cout << "Hello, world!" << std::endl; f47]gtB-
return 0; EVX3uC}{
} ju{Y6XJ)
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b?i+nhqI
C++/CLI CvY+b^ ;
int main() g%f5hy
{ Bdt6 w(`^
System::Console::WriteLine("Hello, world!"); &L+uu',M0c
} \Mg_Q$
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e.n(NW
C# (C Sharp) "=Br&FN{|
class HelloWorldApp e
c&Y2
{ kL*P 3
0
public static void Main() #uhUZq
{ 2e1KF=N+
System.Console.WriteLine("Hello, world!"); 6WY/[TC-
} @=Q!a (g
} o%t4WQ|bj
\0b}Z#'0
f,cd=vGj
COBOL P }sr
IDENTIFICATION DIVISION. *H
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PROGRAM-ID. HELLO-WORLD. ^z{szy?Fg
z$%twBg}#
ENVIRONMENT DIVISION. eIkKsgr>
Food<(!.>
DATA DIVISION. Y~I<L ocv
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)
PROCEDURE DIVISION. 7&ED>Bk
DISPLAY "Hello, world!". }mj9$=B4
STOP RUN. '>"{yi-
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b5NVQ8Mq
Common Lisp 8F}drK9>F
(format t "Hello world!~%") 1hG#
p\w<~pN[
t%lat./yT
DOS批处理 rm[C{Pn
@echo off >$4#G)s
echo "Hello, world!" $d?W1D<A
G\@pg;0|y
7)lEZJK&T
Eiffel m-Eh0Zl>Z
class HELLO_WORLD dz_S6o ]
R*[sO*h\k
creation =fcg4h5(
make KxkBP/`3Q
feature yq%5h[M
make is Za:j;u
Y
local gg/`{
io:BASIC_IO ?_NKyiu95
do "h sT^sy
!!io F` U~(>u'
io.put_string("%N Hello, world!") `6U!\D
end -- make ` =>}*GS
end -- class HELLO_WORLD M13HD/~O
VzP az\e
-'&/7e6>y
Erlang [;u#79aE
-module(hello). MR#*/Iw~
-export([hello_world/0]). za_b jE
;+9OzF ;
hello_world() -> io:fwrite("Hello, World!\n"). sK}AS;:
Fv$tl)p*
4ijtx)SA
Forth N''QQBUD
." Hello, world!" CR yKc-:IBb{u
u R0UfKK
b[74$W{
Fortran T`&zQQ6F'
WRITE(*,10) /WuYg
OI
10 FORMAT('Hello, World!') C~ 1]
STOP 1R2IlUlzFr
END &9yZfp
Met]|&
F$7!j$
Z
HTML _'=,c"
<HTML> 40t xZFQ0
<HEAD> (\AN0_
<TITLE> Hello World! </TITLE> IO%kXF.[
</HEAD> #EPC]jFk
<BODY> -YA,Stc-
<p>Hello World!</p> 0fsVbC
</BODY> -vvyG
</HTML> \Vyys[MMY8
#<*Vc6pC
AC,RS7
HQ9+ -o ).<
H FdU]!GO-X
Gw*Tz"
{&51@UX
INTERCAL /(dP)ysc
PLEASE DO ,1 <- #13 |mEWN/@C
DO ,1 SUB #1 <- #238 ,Bk5(e
DO ,1 SUB #2 <- #112 ./YR8 #,
DO ,1 SUB #3 <- #112 }HgG<.H>
DO ,1 SUB #4 <- #0 @>2pY_
DO ,1 SUB #5 <- #64 +9_Y0<C
DO ,1 SUB #6 <- #238 &hOz(825r
DO ,1 SUB #7 <- #26 -%asHDQ{
DO ,1 SUB #8 <- #248 p*
>z:=
DO ,1 SUB #9 <- #168 }3(!kW
DO ,1 SUB #10 <- #24 )Qbd/zd\U
DO ,1 SUB #11 <- #16 XqTguO'
DO ,1 SUB #12 <- #158 @62T:Vl
DO ,1 SUB #13 <- #52 '}.Yf_
PLEASE READ OUT ,1 /R#zu_i
PLEASE GIVE UP ')m!48
/v{+V/'+
qN!oN*
Java 9zp!lw~;+
public class Hello Q0U~s\<
{ wI%M3XaBws
public static void main(String[] args) B8@mL-Z-;
{ i^s Vy
System.out.println("Hello, world!"); &.)=>2
} |2(q9j
} +:MSY p
@Cj!MZ=T
9[0iIT$q$
JSP v] m/$X2
<% 1Viz`y)^
out.print("Hello, world!"); -,J<X\
%> {2\Y%Y'}*
TGCB=e
S$mv(C
MIXAL !=[Y yh
TERM EQU 19 the MIX console device number q}{E![ZTu
ORIG 1000 start address ) c@gRb~
START OUT MSG(TERM) output data at address MSG tLE8+[
SU
HLT halt execution ? x)^f+:9|
MSG ALF "MIXAL" ! ]4u"e
ALF " HELL" zoq;3a5cqB
ALF "O WOR" E]V,
@
ALF "LD " (,|,j(=]
END START end of the program Bkcwl
z*.AuEK?
aKI"<%PNn
Nuva y=3 dGOFB
<..直接输出..> P>/:dt'GJ}
Hello, world! o@meogkL
}d[(kC_
<..或者..> ^FVdA1~/
i)i>Ulj*i
<. opcanl9pSW
// 不带换行 Hm-#Mpw
? "Hello, world!" YI0
wr1N
h]4xS?6O
// 或者 X~{6$J|]#i
*$Q>Om]
// 带换行 iq&3S 0
?? 'Hello, world!' ipSMmpB
.> +H-=`+,
Eb3 ZM#
o_:v?Y>0
OCaml )%(ZFn}
let main () = u6|C3,!z"
print_endline "Hello world!";; oF%m
kg/ B<w'
i VSNara
Pascal :5YIoC
program Hello; hRkCB
begin |$Yk)z3
writeln('Hello, world!'); sI>w#1.m/&
end. 0seCQANd
g6M>S1oOO
z/7q#~J,
Perl E7uIur=g!
#!/usr/local/bin/perl ]c(FgYc
print "Hello, world!\n"; +R'8$
PRhC1#
aV;|2}q "
PHP sY]J!"
<?php 2yN!yIPR
print("Hello, world!"); UHl3/m7g
?> !0{SVsc)
]kj^T?&n.
{*xE+ |
Pike 4^7 v@3
#!/usr/local/bin/pike o}N@Q-i gq
int main() LU3pCM{
{ h&"9v~
write("Hello, world!\n"); LjZlKB5C
return 0; EP>u% ]#
} t{k:H4
!I7$e&Uz@
ff--y8h
PL/I iI GK"}
Test: procedure options(main); Aztrq
declare My_String char(20) varying initialize('Hello, world!'); F^dJ{<yX
put skip list(My_String); O& Y;/$w
end Test; %ZVYgtk;*
XYcZ;Z 9:
I9?\Jbqg
Prolog +Mj6.X
goal ; lMv xt:
write("hello,world!"). ;,{_=n>
E$"NOR
OUv )`K
Python P\"kr?jZP
#!/usr/local/bin/python v93b8/1
print "Hello, world!" Nd(,oXa~
!HTOE@
O8;/oL4 U
REXX 9o@3$
say "Hello, world!" i?T-6{3I
Q 3WD!Z8y
cU;Bm}U
Ruby ieyK$q
#!/usr/bin/ruby ^t0!Dbx3SE
print "Hello, world!\n" k1Y\g'1
M;A_'h?Z
[RF,0>^b
Scheme Wn<?_}sa|z
(display "Hello, world!") A7 RI&g
v5
(newline) ,TBOEu."4
%"
iX3
}dc0ZRKgx
sed (需要至少一行输入) /k.0gYD
sed -ne '1s/.*/Hello, world!/p' !W}sOK7#
Nl\`xl6y]
[-(^>Y
Smalltalk ^G4YvS(
Transcript show: 'Hello, world!' TQR5V\{&%
CJ<nUIy'z
ay8]"sa
SNOBOL cAR
`{%b
OUTPUT = "Hello, world!" k*1Lr\1
END QK_5gD`$a,
VEps|d3,,
|\(uO|)ju
SQL {B+}LL!
create table MESSAGE (TEXT char(15)); [ycX)iM
insert into MESSAGE (TEXT) values ('Hello, world!'); fU6YJs.H^8
select TEXT from MESSAGE; q9
Df`6+
drop table MESSAGE; p?gm=b#
#A)V
J|WE&5'
Tcl !5,C"r
#!/usr/local/bin/tcl ~RR!~q
puts "Hello, world!" ':.Hz]]/A
:1 +Aj
(
@.;+WQE
TScript {!Qu(%
? "Hello, world!" ^4sfVpD2!
fD!c t; UK
G)vNMl
Turing c7mKE`
put "Hello, world!" lY,^
eo+<@83
f-~Y
UNIX-style shell N,Y)'s<
程序中的/bin/sh可改为您使用的shell Zc7;&cz
Sz5t~U=G
#!/bin/sh P@N+jS`Vf
echo 'Hello, world!' /
9=j9vBV
\ eHOHHAGW
GUI ZSf &M
v ,")XPY
Delphi 8maWF.xq
program HelloWorld; x/,;:S
uses 12 p`ZD=
Dialogs; 9E7 G%-
begin R+LKa Z
ShowMessage('Hello, World!'); qvn.uujYS
end. '#6eUb
ny-:%A
P~ObxY|
Nuva aUw-P{zp%
<. "L3mW=!*
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) LS~at.3zX
.> g Wtc3
53t_#Yte
,`t+X=#
Visual Basic [c{\el9H
MsgBox "Hello, world!" FL{Uz+Q
'或者 a_Y<daRO
Print "Hello, world!" x2!R&q8U>
K P]ar.
hYoUZ'4
Visual FoxPro
{/QVs?d
? "Hello, world!" G9:XEEN
D:T]$<=9
K<P d.:
X11 o/N!l]r
用一个程序 h'*v$lt
ACyK#5E
xmessage 'Hello, world!' Mj@2=c
7
$y;-[E[
用C++和gtkmm 2 4en3yA0.w
Gxw1P@<F:
#include <iostream> =RB
{.%
#include <gtkmm/main.h> n&[CTOV
#include <gtkmm/button.h> NO!Qo:
#include <gtkmm/window.h> 5cPyi/
using namespace std; P%2v(
5%}e j)@
class HelloWorld : public Gtk::Window d{YvdN9d
{ R'Jrbe|
public: S;4:`?s=i
HelloWorld(); HLWffO/
virtual ~HelloWorld(); <Kt_
oxK,
protected: ;1(^H:7T
Gtk::Button m_button; ofB:7
virtual void on_button_clicked();
RHUZ:r
}; >~o-6g
GK$[ !{w;
HelloWorld::HelloWorld() : m_button("Hello, world!") TUfj\d,
{ v0DDim?cc
set_border_width(10); /p
!A:8
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); bWTfP8gT
add(m_button); aqON6|6K
m_button.show(); 1_+ h"LE
} NWf=mrS8@$
}zGx0Q
HelloWorld::~HelloWorld() {} Sgi`&;PF
D?n6h\h\$%
void HelloWorld::on_button_clicked() <K0epED
{ ?c#s}IH
cout << "Hello, world!" << endl; -Q20af-
} 1'&.6{)P
Y5aG^wE[:
int main (int argc, char *argv[]) JI>Y?1i0O
{ $cSUB
Gtk::Main kit(argc, argv); }a;xs};X;
HelloWorld helloworld; B%tF|KKj
Gtk::Main::run(helloworld); $7q3[skH
} 4aHogheg
neFwxS?
oxxuw
Dcl
Java bv4umL /
import java.awt.*; {;{U@Z
import java.awt.event.*; rI>x'0Go*
pwFdfp
public class HelloFrame extends Frame c{=;lT
{ kyHli~Nr"
HelloFrame(String title) Rzd`MIHDp
{ mi=mwN%UB
super(title); T8+[R2_
} Jxvh;
public void paint(Graphics g) h ;*x1BVE
{ YYQvt
super.paint(g); @;egnXxF<