“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。 /\$|D&e
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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》。 0#{]!>R
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以下是用不同语言写成的Hello World程序的几个例子: H1j6.i}q
Ada vG_v89t!ex
with Ada.Text_Io; use Ada.Text_Io; 0t[mhmSU,
procedure Hello is 2:/MN2
begin }_/h~D9-T#
Put_Line ("Hello, world!"); & c9Fw:f;
end Hello; !=:MG#p
7Z~szD
W
(c\$2`
汇编语言 ts\>_/
S,9WMti4x
x86 CPU,DOS,TASM 14YV#o:
MODEL SMALL -x\l<\*
IDEAL [*ovYpj^
STACK 100H d?y\~<
d#:J\2V"R
DATASEG B:#0B[
HW DB 'Hello, world!$' 2|>wY%
yx;R#8;b.
CODESEG @%G"i:HZ&
MOV AX, @data ]JPPL4wAT
MOV DS, AX \lIHC{V\
MOV DX, OFFSET HW 2pNJWYW"
MOV AH, 09H "_@+/Iy.
INT 21H _"bvT?|
MOV AX, 4C00H KP-z
INT 21H /D]r"-
END NWwtq&pz2
0Ilvr]1a4
[Q_|6Di
x86 CPU,GNU/Linux,NASM Ul0<Zxv
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). UZ3Aq12U}a
;Enter this into "hello.asm" then type: \bA'Furp
;"nasm -f elf hello.asm" 4m!3P"$
;"ld hello.o -o hello" j?hyN@ns
;"./hello" pz}hh^]t
Pc4cSw#5
section .data ;data section declaration 1gej$G@
msg db 'Hello World!',0AH J7^T!7V.
len equ $-msg ;string length (wF$"c3'{
U9sub6w 6
section .text ;code section declaration 7{F9b0zwk
global _start ;entry point (start of execution) 7#.PMyK9
_start: mov edx,len ;string length kGiw?~t=%
mov ecx,msg ;string start =d.W'q|
mov ebx,1 ;file handle: stdout A2_3zrE
mov eax,4 ;sys_write S,v >*AF
int 80h ;kernel system call 8B+^vF
V*uu:
mov ebx,0 ;return value t
U=b~
mov eax,1 ;sys_exit }eFUw
int 80h ;kernel system call ?o5#Ve$-X
*LdH/C.LIf
\#7%%>p=O'
x86 CPU,Windows,MASM32 pytfsVM
.386 TFNU+
.model flat,stdcall '^3pF2lIw
option casemap:none q ? TI,
;Include 文件定义 M|=$~@9#X
include windows.inc Nh/ArugP5P
include user32.inc .T wF]v
includelib user32.lib vbh#[,lh
include kernel32.inc Cy'W!qH
includelib kernel32.lib <%uZwk>#
;数据段 rWKLxK4oU
.data [z@RgDXv
szCaption db 'A MessageBox!',0 *`'%tp"'+
szText db 'Hello,world!',0 ,8?*U]}
;代码段 &?sjeC_
.code Cs=i9.-A
start: =C1Qo#QQ%
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK jN>UW}?
invoke ExitProcess,NULL Y,}43a0A
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> J
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end start D|3QLG
CGl+!t{
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AWK 3edK$B51;
BEGIN { print "Hello, world!" } Vzm7xl [
%t.IxMY
6.=1k
BASIC *.Hnt\4|
传统版BASIC(例如GWBASIC): ~x|Sv4M
?|yJ#j1=
10 PRINT "Hello, world!" I3b-uEHev
20 END g~u!,Zc
*X5LyO3-gP
或在提示符输入: 1K',Vw_
iqP0=(^m
?"Hello, world!":END xl=|]8w
uW_ /7ex
现代版BASIC(例如Quick BASIC): <_uv!N
IQY#EyTb
Print "Hello, world!" vu >@_hv
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以下的语句在Quick BASIC中同样有效: .sMi"gg
')~HOCBSE
? "Hello,world!" I65GUX#DV
MRu+:Y=K
<rxem(PPu
BCPL y%Ah"UY
GET "LIBHDR" 1&nrZG9
HXo'^^}q;
LET START () BE -8e tH&
$( 6
VDF@V$E
WRITES ("Hello, world!*N") )A;<'{t #L
$) K2v)"|T)
2b1:Tt9
mz'8
Befunge lph_cY3p
"!dlrow olleH">v w`:KexD+
, l]cQ7g5
^_@ k Er7,c
Q"uu&JC
5@5="lNjS
Brainfuck {+}Lc$O#C
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< X/"H+l
+++++++++++++++.>.+++.------.--------.>+.>. roQIP%h!
#}?$mxME*
tJ3s#q6
C dq&d>f1
#include <stdio.h> Xu0*sQK
V4D&&0&n
int main(void) vS<e/e+
{ 9rz "@LM
printf("Hello, world!\n"); L.[2l Q
return 0; hw2Hn
} r?*?iw2g
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Kz;VAH
C++ cFQa~
#include <iostream> *x!5I$~J
UI'eD)WR
int main() B$j,: ^
{ =r8(9:F!
std::cout << "Hello, world!" << std::endl; q~lW
return 0; ]T`qPIf;yJ
} ZO^+KE"
/8R1$7
E u
C++/CLI (re D
int main() X)S4rW%
{ yE>DQ *
System::Console::WriteLine("Hello, world!"); SQK6BEjE8
} llJ)u!=5
0Jrk(k!
TB\CSXb
C# (C Sharp) .X9^ A,9
class HelloWorldApp F9" K
{ ^,gKA\Wli
public static void Main() lQjq6Fl2
{ .b"e`Bw_=
System.Console.WriteLine("Hello, world!"); 6dp~19T^
} j!/(9*\
} *lSIT]1
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`P~RG.HO
COBOL U_?RN)>j
IDENTIFICATION DIVISION. b04~z&Xv
PROGRAM-ID. HELLO-WORLD. V{r@D!}
A{vG@Pwc:
ENVIRONMENT DIVISION. E}u\{uY
B#}RMFIj
DATA DIVISION. `JCC-\9T_
rO~D{)Nu
PROCEDURE DIVISION. t30V_`eQ
DISPLAY "Hello, world!". A(B2XBS!?
STOP RUN. as8<c4:v
2},}R'aR
s_N!6$tS
Common Lisp 0=iJT4IEJ
(format t "Hello world!~%") W~4|Z=f
&!=3Fbn
X}Lp!.i9o
DOS批处理 LO229`ARr|
@echo off n3w2&
echo "Hello, world!"
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=}[V69a
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Eiffel >=bO@)[
class HELLO_WORLD li[g =A,
aw`mB,5U
creation 2iu;7/
make <fxYTd<#D[
feature Q1rwTg\
make is .B@;ch,
local 0M"E6z)9
io:BASIC_IO ?@#<>7V
do nC w1H kW
!!io %K%z<R8
io.put_string("%N Hello, world!") x;I*Ho
end -- make P~&X$H%e
end -- class HELLO_WORLD V2*b f`/V
bm^ou#]|
C>H UG
Erlang ^t*BWJxPC
-module(hello). %$08*bAtB7
-export([hello_world/0]). 0Z\fK>yw
BB-`=X~:m
hello_world() -> io:fwrite("Hello, World!\n"). R]dB Uu
I4$a#;
)}R0'QGd
Forth 2Y,s58F
." Hello, world!" CR wo/H:3^N
`is6\RH
w-1CA{"i7
Fortran i^8Zp;O"f
WRITE(*,10) 1\BECP+
10 FORMAT('Hello, World!') rpd3Rp
STOP 3k=q>~&@
END X*b0q J
Z
p|Ln;aYc
&EMm<(.]a
HTML 3wK)vW
<HTML> i9\Pks#l%
<HEAD> w/R^Vwq
<TITLE> Hello World! </TITLE> 2c}kiqi{
</HEAD> #M:W?&.
<BODY> ^E9@L??
<p>Hello World!</p> jN[Z mJz'
</BODY> nQ mkDPjU
</HTML> kn!J`"b
PiN3t]2
Qtk'^Fc
HQ9+ :ZUy(8%Wl
H /];F4AO5
q+N}AKawB
&B)
F_E I
INTERCAL Ws=J)2q
PLEASE DO ,1 <- #13 Z/64E^
DO ,1 SUB #1 <- #238 P~~RK&+i
DO ,1 SUB #2 <- #112 |(w x6H:
DO ,1 SUB #3 <- #112 k&Sg`'LG8
DO ,1 SUB #4 <- #0 P)T:6K
DO ,1 SUB #5 <- #64 Dv$xP)./
DO ,1 SUB #6 <- #238 bBZvL
DO ,1 SUB #7 <- #26 JL<}9K
DO ,1 SUB #8 <- #248 CxO)d7c
DO ,1 SUB #9 <- #168 h7g9:10
DO ,1 SUB #10 <- #24 .AKx8=f
DO ,1 SUB #11 <- #16 3M^ /
DO ,1 SUB #12 <- #158 [ML4<Eb+x
DO ,1 SUB #13 <- #52 ?)9 6YX'
PLEASE READ OUT ,1 *d@}'De{8
PLEASE GIVE UP 5ewQjwW0
Ouj5NL
%o5GD
Java Dgdh3q;
public class Hello "zr%Q'Ky
{ R (6Jvub"I
public static void main(String[] args) /GEqU^
B
{ Blu^\:?#z-
System.out.println("Hello, world!"); JAgec` T%
} p.zU9rID
} &fW;;>
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#ujcT%1G
JSP R(csJ4F
<% ?9AByg
out.print("Hello, world!"); #x'C
%> *rA!`e*
sO6+L
#!
0O[q6!&]
MIXAL #u#s'W
TERM EQU 19 the MIX console device number $?0<rvGJ
ORIG 1000 start address ?Hq`*I?b9
START OUT MSG(TERM) output data at address MSG 3B>!9:w~f
HLT halt execution ,5<-\"{]
MSG ALF "MIXAL" [3j]r{0I
ALF " HELL" iE$0-Qe[3
ALF "O WOR" ~jJu*s$?
ALF "LD " gp;(M~we
END START end of the program wjY3:S~
<;=X7l+
X\M0Q%8
Nuva #B54p@.}
<..直接输出..> F> ..eK
Hello, world! WWD\EDnS
rGx1>xd(k
<..或者..> (R.k.,z
sjztT<{Q^-
<. t@b';Cuv
// 不带换行 #*?a"
? "Hello, world!" tk ~7>S
ZQ@^(64
// 或者 nc([e9_9v
jo+T!CUM'
// 带换行 ;IwC`!(#
?? 'Hello, world!' ,VbP$1t
.> +i{&"o4}
}Vg&9HY
w!%Bc]
OCaml eml(F
let main () = )KkA<O}f
print_endline "Hello world!";; DLf6D |"
[S'ngQ"f`
8DyE
Pascal 0YW<>Y`6
program Hello; .{~ygHQ`f
begin C#;}U51:t
writeln('Hello, world!'); :;rd!)5
end. u2o6EU`
:*Sl\:_X)
%WdAI,
Perl ar R)]gk
7
#!/usr/local/bin/perl E+csK*A7
print "Hello, world!\n"; . [*6W.X
i
yMIP~N,$
pZF`+642
PHP lZ'NLbK
<?php ,f4Hl%T;
print("Hello, world!"); v"\Q/5p
?> o)srE5
k'EP->r
Z-Zox-I1}-
Pike L7C!rS
#!/usr/local/bin/pike !c'a<{d@
int main() k(!#^Mlz[
{ -k")#1
write("Hello, world!\n"); cl)%qIXj}H
return 0; , En
D3
|
} {- tCLkE
3
/zM
nTp?
PL/I LBbk]I
Test: procedure options(main); x_AG=5OJX,
declare My_String char(20) varying initialize('Hello, world!'); KGFmC[
put skip list(My_String); >4b-NS/}0
end Test; V(w2k^7)F
} D{y
u+)
|-=^5q5
Prolog Qgf\gTF$r+
goal K%Jy?7
U
write("hello,world!"). u0Irf"Ab
^0c:ro
d%\en&:la
Python n:x6bPal]
#!/usr/local/bin/python NqVe{+1x
print "Hello, world!" _.yBX\tf[
=X]$J@j
>@`D@_v
REXX ]t(;bD hT
say "Hello, world!" \k;*Ej~.
rt^<=|Z
[C.Pzo
Ruby ;WWUxrWif
#!/usr/bin/ruby vSX71
print "Hello, world!\n" TlQu+w|
s^)wh v`C
d>VerZZU
Scheme ,FlF.pt
(display "Hello, world!") /2tgxm$}
(newline) ;gP@d`s
cEhwv0f!qS
2a3i]e5Kt
sed (需要至少一行输入) ^ dM,K
p
sed -ne '1s/.*/Hello, world!/p' 3mIVNT@S9
T&j_7Q\;vI
_r^Cu.[7
Smalltalk y?zNxk/p
Transcript show: 'Hello, world!' :?O+EE
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]9pK^<
SNOBOL $2~I-[
OUTPUT = "Hello, world!" G n>#Mvq
END g/'CX}g`
^0Cr-
aq@/sMn
SQL n3da@ClBt
create table MESSAGE (TEXT char(15)); 'P3CgpF<Z2
insert into MESSAGE (TEXT) values ('Hello, world!'); I&,gCZ#
select TEXT from MESSAGE; * _)xlpy
drop table MESSAGE; Tky\W%Ag
/\q1,}M
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Tcl }uz*6Z(S
#!/usr/local/bin/tcl /=).)<&|R
puts "Hello, world!" }lvD 5
G];5'd~C;d
1O"7%Pvw
TScript dj3}Tjt
? "Hello, world!" _3i.o$GO
xlg 6cO
k z"F4?,
Turing B{hP#bYK
put "Hello, world!" ?ey!wcv~
*G"L]Nq#
+]
s"* 'V$
UNIX-style shell hN=YC\l
程序中的/bin/sh可改为您使用的shell QVA)&k'T,
2m7Z:b
#!/bin/sh .'.#bH9K
echo 'Hello, world!' cy%JJ)sf
_ +q.R
kC"lO'
GUI (U#4j 6Q
A%qlB[!:
Delphi Dl_y[9
program HelloWorld; Y]!8Ymuww@
uses -!zyit5B
Dialogs; e@}zp
begin } Wx#"6
ShowMessage('Hello, World!'); !#wd~: H
end. x%Ivd
BU
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o&g-0!"
Nuva 5Arx"=c
<. \3a(8Em
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) 'mx_]b^O
.> U{6i5;F#H
aZ"9)RJe
1iyd{r7|
Visual Basic !*JE%t
MsgBox "Hello, world!" d}#G~O+y3v
'或者 @62QDlt;
Print "Hello, world!" HIM>%
Wyh
a7KP_[_(
Visual FoxPro >U?HXu/TJr
? "Hello, world!" P4@<`Eb
hYOUuC
tu{y
X11 yyCx;
用一个程序 f-!t31?XK
m/vwM"
xmessage 'Hello, world!' wju2xM
9,g &EnvG
用C++和gtkmm 2 I[E/)R{\
IWbW=0IsS
#include <iostream> |a/1mUxQ&
#include <gtkmm/main.h> 8JvF4'zx
#include <gtkmm/button.h> S,A\%:Va
#include <gtkmm/window.h> :j2G0vHIl(
using namespace std; zOO:`^ m
]"? +R+
class HelloWorld : public Gtk::Window 2@ 4^ 81
{ lrQ +G@#
public: PO9<g%qTf
HelloWorld(); c@iP^;D
virtual ~HelloWorld(); qo{2 CYG\+
protected: 29#&q`J
Gtk::Button m_button; PgZeDUPP
virtual void on_button_clicked(); wa/
:JE
}; 3%c{eZxG=
9nIBs{`/Ac
HelloWorld::HelloWorld() : m_button("Hello, world!") O
:P%gz4
{ E07g^y"}i
set_border_width(10); 'fB/6[bd
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); R?bF
b|5t
add(m_button); &Xw{%Rg
m_button.show(); 5T]GyftFV
} KFxy,Z$-4
k\,01Y^
HelloWorld::~HelloWorld() {} ;;4xpg
u`GzYG-L
void HelloWorld::on_button_clicked() GR&T
Z
{ 5@_c<
cout << "Hello, world!" << endl; 5<1,`Bq@
} =+@Ip Xj
5\1C@d
int main (int argc, char *argv[]) B1\@ n$
{ @#sBom+K`
Gtk::Main kit(argc, argv); 2x3'm
HelloWorld helloworld; ai/VbV'|
Gtk::Main::run(helloworld); zQsu~8PX
} XHq8p[F
@H'pvFLK?
pMJK?- )
Java +Fu=9j/,j
import java.awt.*; '&_<!Nv3
import java.awt.event.*; '&