“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。 F5y&"Y_
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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》。 n1x"B>3
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以下是用不同语言写成的Hello World程序的几个例子: M.HMnN#
Ada pekNBq
Wm
with Ada.Text_Io; use Ada.Text_Io; l.P;85/+
procedure Hello is TPs
]n7]:
begin ^H -a@QM
Put_Line ("Hello, world!"); }kF?9w
end Hello; (I#mo2
B}"V.Msv/
tH~>uOZW
汇编语言 K)
Ums-b
Sx8C<S5r<
x86 CPU,DOS,TASM 0cDP:EzR;
MODEL SMALL >=:^N-a
IDEAL i{16&4 '
STACK 100H &KY!a0s
=kf"%vFV
DATASEG t
.}];IJP
HW DB 'Hello, world!$' ~ToU._
do*aE
CODESEG D &@Iuo
MOV AX, @data ?bpVdm!
MOV DS, AX -:kIIK
MOV DX, OFFSET HW Uu52uR
MOV AH, 09H M[+#*f.T}
INT 21H Yep~C%/}
MOV AX, 4C00H jSSEfy>^
INT 21H 'F#dv[N
END V/:2xT
Rt:^'Qi$!
];jp)P2o
x86 CPU,GNU/Linux,NASM O"/Sv'|H#
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). IT)3Et@Y
;Enter this into "hello.asm" then type: C#4_`4{
;"nasm -f elf hello.asm" >q0%yh-
;"ld hello.o -o hello" IA{W-RRb
;"./hello" 6B*#D.fd*
f$ tm<:)Y
section .data ;data section declaration L^zh|MEyzk
msg db 'Hello World!',0AH hsT&c|
len equ $-msg ;string length }dHdy{$
MTN*{ug2:
section .text ;code section declaration HOF=qE*p
global _start ;entry point (start of execution) =LODX29
_start: mov edx,len ;string length
I!Z"X&
mov ecx,msg ;string start i(OeE"YA
mov ebx,1 ;file handle: stdout 6B%
h
mov eax,4 ;sys_write /[D_9
int 80h ;kernel system call ?
|#dGk g
*G7cF
mov ebx,0 ;return value P-nhG
mov eax,1 ;sys_exit 0\vG
<
int 80h ;kernel system call QxN1N^a0
qE|syA9
.ANR|G
x86 CPU,Windows,MASM32 hSR+7qN<e
.386 c/ih%xR
.model flat,stdcall h5pfmN\-5
option casemap:none sei2\l8q
;Include 文件定义 dGi
HO
include windows.inc 5&h">_j
include user32.inc N>,`TsUwW
includelib user32.lib "DA%vdu
include kernel32.inc _Gf-s51s
includelib kernel32.lib M0~%[nX
;数据段 !_QT{H
.data 77y+ik
szCaption db 'A MessageBox!',0 N_S~&(I|
szText db 'Hello,world!',0 RGs7Hc
;代码段 .c~z^6x
.code D/~1?p
start: vy 7/
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK P tLWFO
invoke ExitProcess,NULL AFm9"mQrw
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Kvo&_:
end start 1^2Q`~,g
<nN.$4~X
5OtdB'UITd
AWK oC*a;o
BEGIN { print "Hello, world!" } #{{p4/:
u '/)l}
O,|NOz
BASIC aK95&Jyw&
传统版BASIC(例如GWBASIC): hc+B+-,
>X
eXd{$
10 PRINT "Hello, world!" (tOhuSW
20 END G_J}^B*?%v
\~z$'3H`
或在提示符输入: LiV&47e*>
jx}'M$TA
?"Hello, world!":END Kx&"9g$
4xr^4\lk
现代版BASIC(例如Quick BASIC): Su"Z3gm5Kw
9Dgs
A`{$
Print "Hello, world!" "C\yM{JZ
K%+4M#jj5
以下的语句在Quick BASIC中同样有效: W dD889\
r A(A$VR
? "Hello,world!" ]W14'Z
Xd5s8C/}
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BCPL <j>;5!4!}
GET "LIBHDR" )\EIXTZY=
Ec}%!p_$
LET START () BE DAP/
$( 3MFTP5~
WRITES ("Hello, world!*N") @R50M (@W
$) #`
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Xi) ;dcNJ
rMi\#[oB
Befunge GRbbU#/=G
"!dlrow olleH">v qar{*>LCG
, c8"Qmy
^_@ GT6i9*tb#
-5+Yz9pv[
B K+P
Brainfuck H.4ISmXU
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ?L7DVwVa,I
+++++++++++++++.>.+++.------.--------.>+.>. 2=n`z)R
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C 1x;@BV
#include <stdio.h> Ca5#'3Eh
>Ti%Th,
int main(void) J(d[05x0
{ (,#m+
printf("Hello, world!\n"); 8R!-,I"$
return 0; ~Jr'4%
} 7<!x:G?C
f^B'BioW(
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C++ _7Y-gy#\a
#include <iostream> P@ew' JL%
8`urkEI^r
int main() ub-e! {
{ FEu"b@v
std::cout << "Hello, world!" << std::endl; SfC* ZM}<
return 0; ||QK)$"
} O}Pqbx&
)5~T%_
b)Da6fp
C++/CLI M.t,o\xl
int main() U|tacO5w`
{ Od~uYOL/B
System::Console::WriteLine("Hello, world!"); */aQ+%>jf
} $&Vba@v
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MWA,3I\.
C# (C Sharp) sIf]e'@AC
class HelloWorldApp Z/G#3-5)p
{ F&R*njJcc
public static void Main()
M-i3_H)
{ 9X 4[Zk
System.Console.WriteLine("Hello, world!"); @ewaj!
} yP+<kv4
} <ytzGDx
zhs@YMY
\^"Vqx
COBOL F<g&t|@
IDENTIFICATION DIVISION. 6c-3+,Y"#
PROGRAM-ID. HELLO-WORLD. ,4t6Cq!
s0;a j<J
ENVIRONMENT DIVISION. InbB2l4G
UzaAL9k
DATA DIVISION. TU^ZvAO&
l 1k&@1"
PROCEDURE DIVISION. tUxH6IS
DISPLAY "Hello, world!". 9gw;MFP)D
STOP RUN. z+Fu{<#(
eZ(ThA*2=t
Gm:s;w-;v
Common Lisp %6uZb sa
(format t "Hello world!~%") 4vWiOcJF!O
PB$beQ
!;,\HvEZYw
DOS批处理 jOzXy Dq
@echo off x;yvv3-$
echo "Hello, world!" &Jj|+P-lY
+S0aA Wal
_|I8+(~)
Eiffel mP
}<{oh`x
class HELLO_WORLD Y,0Z&6 <
2H.g!( Oza
creation /}~=)QHH
make 7yyX8p>
feature Rkg8
make is NJsaTBT
local U&BCd$
io:BASIC_IO KLW5Ad:/rI
do aq_K,li#w
!!io }p*|8$#x"
io.put_string("%N Hello, world!") x6R M)rr
end -- make E8r6P:5d`
end -- class HELLO_WORLD N
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"NA<^2W@J
XyN
" Jr
Erlang JK<[]>O
-module(hello). u*2?Gky
-export([hello_world/0]). zO"De~[9
S:j{R^$k
hello_world() -> io:fwrite("Hello, World!\n"). %P s.r{%{
C @<T(`o
r'{N_|:vv
Forth v; i4ZSV^A
." Hello, world!" CR lM4 Z7mT /
)1#/@cU
Xrb7.Y0d
Fortran ]?1_.Wjtt
WRITE(*,10) ^PNDxtd|v
10 FORMAT('Hello, World!') k5aB|xo
STOP @z ",1^I
END #tu>h
d~~, 5E
)TiM>{
HTML N!~]D[D
<HTML> b_nE4>
<HEAD> o-H?q!
<TITLE> Hello World! </TITLE> 7BU7sQjs
</HEAD> ?H PAX
<BODY> q( ~rk
<p>Hello World!</p> :5&D6
</BODY> 37kFbR@x
</HTML> li3,6{S#
46NuT]6/4
o+=wQ$"tP
HQ9+ 2mzn{S)nV
H _?O' A"
LJ
<pE;`d
gQ0,KYmI3_
INTERCAL 3,q?WH%_
PLEASE DO ,1 <- #13 ``jNj1t{}
DO ,1 SUB #1 <- #238 1!(lpp
DO ,1 SUB #2 <- #112 Cs>` f,o
DO ,1 SUB #3 <- #112 Sk7R;A
DO ,1 SUB #4 <- #0 -)(=~|,Pq/
DO ,1 SUB #5 <- #64 ~|S0E:*.
DO ,1 SUB #6 <- #238 (CIcM3|9C
DO ,1 SUB #7 <- #26 Wr b[\
?-
DO ,1 SUB #8 <- #248 y*^UGJC:
DO ,1 SUB #9 <- #168 }#D=Rf?2\P
DO ,1 SUB #10 <- #24 ;dUKFdKH}
DO ,1 SUB #11 <- #16 nk tGO
DO ,1 SUB #12 <- #158 ZAfuW^r
DO ,1 SUB #13 <- #52 FulFEnSV
PLEASE READ OUT ,1 ].xSX0YQ%
PLEASE GIVE UP %:`v.AG
C5V}L
Z qn$ >mG-
Java 7P3pjgh
public class Hello @ U=y}vi8
{ ZcjLv
public static void main(String[] args) oH6zlmqG"
{ ZT!8h$SE:
System.out.println("Hello, world!"); QG?!XWz
} _[&V9Jt
} N,qo/At}R[
}_KzF~
m0;j1-t
JSP Lp:VU-S
<% 8WQ#)
out.print("Hello, world!"); #[9UCX^=
%> lfDd%.:q4S
_1E c54D
F_:zR,P%#
MIXAL X,VI5$
TERM EQU 19 the MIX console device number nm#23@uZ4K
ORIG 1000 start address WRu(F54Sk
START OUT MSG(TERM) output data at address MSG bgBvzV&'8
HLT halt execution QD!NV*
MSG ALF "MIXAL" 9dA+#;?
ALF " HELL" <rgK}&q
ALF "O WOR"
p*lP9[7
ALF "LD " \u`P(fI!K%
END START end of the program 69r%b7#
=5Db^
~_JfI7={Jn
Nuva PI%l
<..直接输出..> 9k71h`5
Hello, world! 0>CG2 SRn
[ K/l;Zd
<..或者..> cJ$jU{}
9*s8%pL
<. |
CFG<]
// 不带换行 y%%VJ}'X!
? "Hello, world!" >gzM-d
[ ?7QmZK
// 或者 m
uO.
{2:baoG-
// 带换行 ?aTH<
?? 'Hello, world!' nD/B:0'
.> Mu`_^gG
TM6wjHFm
3_
J'+
OCaml p3 5)K5V
let main () = _@>*]g
print_endline "Hello world!";; j}.gK6Yq*
?9{^gW4|
el5Pe{j'
Pascal ^V; r
program Hello; %!Eh9C*
begin d)uuA;n
writeln('Hello, world!'); a({Rb?b
end. wwdmz;0S
P<R^eLZ<&
DI8I'c-P
Perl Wtu-g**KN
#!/usr/local/bin/perl 9{fP.ifdv7
print "Hello, world!\n"; Bv~^keuj3t
Te}gmt+#%
Ux',ma1JK
PHP 0cB]:*W
<?php hJ8&OCR }
print("Hello, world!"); p9i7<X2&
?> :|5 m"X\
Cu%BU}(
ASi2;Q_{_
Pike A7YCSjB
#!/usr/local/bin/pike -<x%
int main() ^n~Kr1}nj
{ 31^/9lb
write("Hello, world!\n"); 4ZUtK/i+r
return 0; <fBJ@>
} /Hk})o_
XO?WxL9k]
hb8oq3*x
PL/I PYi<iSr
Test: procedure options(main); V#,|#2otZ
declare My_String char(20) varying initialize('Hello, world!'); 2d|^$$#`
put skip list(My_String); a+z>pV|
end Test; p\_3g!G'
2|ee` "`
^~l@ _r
Prolog [MAPa
goal %6lGRq{/?
write("hello,world!"). uHquJQ4
YYI0iM>
ZJbaioc\
Python *j(fk[,i
#!/usr/local/bin/python 4V[(RXc/
print "Hello, world!" 4mW$+lzn
81#x/&E]
,O.iOT0=;
REXX > Q=e9L=
say "Hello, world!" u=@zYA(
]2"UR_x
$U ._4
Ruby B_Gcz5
#!/usr/bin/ruby fGj66rMGw
print "Hello, world!\n" Se[=$W
[%LGiCU]
`@\FpV[|P
Scheme m-C#~Cp36
(display "Hello, world!") !4^Lv{1QZ
(newline) Ye|gW=FUR
0?FJ~pu
G@D8[
sed (需要至少一行输入)
(oiQ5s^f
sed -ne '1s/.*/Hello, world!/p' '#A_KHD
ok ,O/|E}?
}@$CS5w
Smalltalk >nehyo:#
Transcript show: 'Hello, world!' D{8B;+
Ro$*bN6p
G1X73qoHT<
SNOBOL )qX.!&|I
OUTPUT = "Hello, world!" L1lDDS#
END c9uu4%KG6<
hb1h.F
[Ti' X#
SQL _{if"
create table MESSAGE (TEXT char(15)); ffB<qf)?G
insert into MESSAGE (TEXT) values ('Hello, world!'); d/T Fx
select TEXT from MESSAGE; 9gK1Gx:
drop table MESSAGE; NV{= tAR
xZq, kP^
?gU-a
Tcl Tl_o+jj
#!/usr/local/bin/tcl #.]W>hN8\
puts "Hello, world!" x=K'Jj
a]V#mF |{
`mZ1!I-T
TScript H^B,b!5i
? "Hello, world!" xV`)?hEXFh
U;ujN 8
'q/C: Yo
Turing 'Q7t5v@FF
put "Hello, world!" 4u2_xbT
#EKnjh=Uq
e=jtF"&
UNIX-style shell qoph#\
程序中的/bin/sh可改为您使用的shell fk2Uxg=[
A&KY7[<AC{
#!/bin/sh kotKKs
echo 'Hello, world!' <#Fex'4
jtpk5 fJB
&QHmo*
GUI TgRG6?#^l
Ak`?,*LM
Delphi \8{Tj54NA
program HelloWorld; 2l+'p[b0>
uses 02^\np
Dialogs; 7|J&fc5BP
begin i7\>uni
ShowMessage('Hello, World!'); Sxy3cv53
end. (/>
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{c1wJ
LBpAR|
Nuva E>QEI;
<. =AHV{V~
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) E}36
.> |~Awm"
u91
Jx&+e,OST
Visual Basic x41 t=E](
MsgBox "Hello, world!" "1P2`Ep;
'或者 _ -ec(w~/
Print "Hello, world!" $Ixd;`l*
da8
R.1o
~Ty6]A
Visual FoxPro 4g.S!-H@R
? "Hello, world!" S[rfcL"
A}"uEk(R
oY@]&A^ah
X11 m1 p%,
用一个程序 el^<M,7!
t!ZFpMv]n
xmessage 'Hello, world!' [h\_yU[P
=Y3 d~~
用C++和gtkmm 2 ,*p(q/kJh~
!<-+}X+o8$
#include <iostream> x||b:2
#include <gtkmm/main.h> lnxA/[`a
#include <gtkmm/button.h> %
e70*;
#include <gtkmm/window.h> $i
`@0+:
using namespace std; 2[Qzx%Vp
F<6{$YI
class HelloWorld : public Gtk::Window 6~k qU4lL
{ P_@ty~u
public: M?$tHA~OX
HelloWorld(); 52
DSKL
virtual ~HelloWorld(); .9!&x0;
protected: *EtC4sP
Gtk::Button m_button; Ga*
virtual void on_button_clicked(); URTJA<r8D
}; 61TL]S8
S7hfwu&7F
HelloWorld::HelloWorld() : m_button("Hello, world!") ! }awlv;
{ h/l?,7KHI
set_border_width(10); N4_V
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); k#@)gL
add(m_button); ^A;ec
h7I
m_button.show(); y|.dM.9V
} A<g5:\3
JDMsco+j5
HelloWorld::~HelloWorld() {} Od]wh
c$3ZEe
void HelloWorld::on_button_clicked() 6Qm .k$[
{ dnX^ ?
cout << "Hello, world!" << endl; ui^v.YCMI
} *\wf(o>Q
K;f=l5
int main (int argc, char *argv[]) A`b
)7+mB
{ |1 LKdP
Gtk::Main kit(argc, argv); L\kT9wWK|
HelloWorld helloworld; w?p8)Q6m
Gtk::Main::run(helloworld); OoAZ t
} gkv,Om
e}"k8 ./
1]jUiX=T
Java ,PyPRPk
import java.awt.*; rg+3pX\{
import java.awt.event.*; ]jJ4\O`
q/YO5>s15
public class HelloFrame extends Frame =0mGfTc
{ o Bp.|8-
HelloFrame(String title) 5 s2/YG=
{ i>rsq[l
super(title); ;
>>/}Jw\
} P,Rqv)}X
public void paint(Graphics g) mZ
t:
{ C;!h4l7L
super.paint(g); P~*v}A
java.awt.Insets ins = this.getInsets(); <Xj
,>2m;
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); qS2]|7q?Tc
} xZ&S7G1