“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。 Sob $j
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 3G%XG{dg
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以下是用不同语言写成的Hello World程序的几个例子: 5ykk11!p$
Ada TY54e T
with Ada.Text_Io; use Ada.Text_Io; JT.\f,z&
procedure Hello is vs'L1$L'c
begin SSL%$:l@
Put_Line ("Hello, world!"); b68G&z>
end Hello; Vav+$l|j@
#T$'.M
MoKXl?B<
汇编语言 |;Se$AdT#
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x86 CPU,DOS,TASM 9(N)MT5F
MODEL SMALL li3PR$W V
IDEAL v'bd.eqw
STACK 100H njwR~ aL`|
[A%e6
DATASEG @KXz4PU
HW DB 'Hello, world!$' 08K.\3
3@Zz-~4Td
CODESEG SqA+u/"j2
MOV AX, @data ?ck^? p7
MOV DS, AX 1EAVMJ
MOV DX, OFFSET HW _#^A:a^e8
MOV AH, 09H
'QekQ];
INT 21H rmg";(I
MOV AX, 4C00H |S>J<]H
p
INT 21H cO=UswIkwO
END 8x^H<y=O
7QOC]:r
hPqapz]HcP
x86 CPU,GNU/Linux,NASM 1<qVN'[
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). =:n[{/O=
;Enter this into "hello.asm" then type: Kz3h]/A.
;"nasm -f elf hello.asm" j]F#p R}p
;"ld hello.o -o hello" #/B~G.+(
;"./hello" MMxoKL
IYM@(c@ld0
section .data ;data section declaration xeP;"J}
msg db 'Hello World!',0AH u>Axq3F
len equ $-msg ;string length -B3wRAEt
*p#YK|
section .text ;code section declaration XvzV
lKL
global _start ;entry point (start of execution) ?/l}(t$H
_start: mov edx,len ;string length iz
GaV[
mov ecx,msg ;string start Y(I*%=:$
mov ebx,1 ;file handle: stdout |H+k?C-w
mov eax,4 ;sys_write ZAo)_za&mH
int 80h ;kernel system call Y%?!AmER
$ Pb[c%'
mov ebx,0 ;return value qLW-3W;WUH
mov eax,1 ;sys_exit X $9D0;L
int 80h ;kernel system call RSWB!-
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0;D
Am=PUQF$
x86 CPU,Windows,MASM32 k0e|8g X
.386 #Mem2cz
.model flat,stdcall 1:{O RX[;
option casemap:none [>Kxm
;Include 文件定义 zk 'e6
include windows.inc
4qSS<SqY
include user32.inc qYu!:xa8
includelib user32.lib C@?e`=9(
include kernel32.inc RH'F<!p
includelib kernel32.lib *(SBl}f4l
;数据段 FO'.
a
.data ZV<y=F*~f
szCaption db 'A MessageBox!',0 Ff#N|L'9_
szText db 'Hello,world!',0 fN*4(yw
;代码段 ,YMdXYu`s
.code k#=leu"I
start: 7quwc'!
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK yA>p[F
invoke ExitProcess,NULL = cI\OsV&?
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Y`O}]*{>8R
end start 1\608~ZH
k}0
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AWK M"$RtS|h
BEGIN { print "Hello, world!" } ]MA)='~
Mn\B\
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BASIC O"-PNF,J
传统版BASIC(例如GWBASIC): x]J-q5
&\]f!'jV
10 PRINT "Hello, world!" lSbM)gL
20 END zQ|x>3
^nm!NL{z^
或在提示符输入: Boj{+rE0
AO 7qs:+
?"Hello, world!":END cSs/XJZ
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现代版BASIC(例如Quick BASIC): -JO46
#m
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Print "Hello, world!" U#1yl6e\I
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以下的语句在Quick BASIC中同样有效: ?oDfI
l'{goy f
? "Hello,world!" Tx?@*Q
nPIR1Z
3^-)gK
BCPL e"H+sM26-
GET "LIBHDR" {)[g
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LET START () BE vls> 6h
$( z` ?xS
WRITES ("Hello, world!*N") 2u;fT{(
$) YIk6:W{
jeBj
I/-w65J]
Befunge CY).I`aJ
"!dlrow olleH">v z`:^e1vG
, gGdYh.K&e5
^_@ awW\$Q
`M<G8ob
S"A_TH
Brainfuck C`_D{r
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 5F+ f '~
+++++++++++++++.>.+++.------.--------.>+.>. ! tPK"k
ZXDMbMD
;Wh[q*A
C n2hsG.4
#include <stdio.h> _,?H rL9
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int main(void) jW$f(qAbm
{ hgr ,v"
printf("Hello, world!\n");
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return 0; G}xBYc0b
} N)y;owgo
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%7wzGtM]ps
C++ k#+^=F^)I
#include <iostream> AX Jj"hN
*ik)>c_
int main() W" ,jZ"7
{ >Ez}r(QQ^
std::cout << "Hello, world!" << std::endl; daJ-H
return 0; M 6Z`Pwv];
} acZ|H
95&sFT
C
J
2~B<=V
C++/CLI 4i&!V9@:
int main() pR7G/]U$A
{ ct/THq
System::Console::WriteLine("Hello, world!"); AG%es0D[H
} {cHTg04
EMH}VigR
tl^;iE!-
C# (C Sharp) c+XR
class HelloWorldApp DYk->)
{ /38Pp%
public static void Main() 62'0 )Cy^
{ J@{Bv%
System.Console.WriteLine("Hello, world!"); (8F?yBu
} a#**96Av
} #^w 1!xXD
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a2)*tbM9\
COBOL t$D[,$G9
IDENTIFICATION DIVISION. ]>!_OCe&
PROGRAM-ID. HELLO-WORLD. 2YEn)A@8
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ENVIRONMENT DIVISION. ]V\g$@
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DATA DIVISION. j*\MUR=
)p](*Z^
PROCEDURE DIVISION. GDe$p;#"9g
DISPLAY "Hello, world!". oYm"NDS_.
STOP RUN. $k=rd#3
Du4?n8 o
-/*{^[
Common Lisp ViONG]F
(format t "Hello world!~%") ;yoq/
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|EU08b]P29
DOS批处理 Ok"wec+,
@echo off 9uo\&,,
echo "Hello, world!" 8u23@?
]qQB+]WN
Fd0FG A&L
Eiffel A[Xw |9
class HELLO_WORLD !LESRh?
cv&hT.1
creation z`6KX93
make "K]4j]yU
feature @}}1xP4Sr
make is ^U1+D^AJ
local $(hZw
io:BASIC_IO @g?z>n
n
do }Q*ec/^{f
!!io D^4V"rq
io.put_string("%N Hello, world!") FpYoCyD}
end -- make I!%@|[ Ow
end -- class HELLO_WORLD `Q[$R&\
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\Bf{/r5x
Erlang |LhuZ_;1xo
-module(hello). V6o,}o&-
-export([hello_world/0]). {GY$J<5=
RAa1KOxZX
hello_world() -> io:fwrite("Hello, World!\n"). -#hl&^u$
ttxOP
hTqJDP"&F
Forth +%^xz
1m
." Hello, world!" CR svII =JB
Xp@OIn
{rr\hl-$
Fortran E_#&L({|@
WRITE(*,10) R2gax;
10 FORMAT('Hello, World!') m{" zFD/
STOP fe,CY5B{
END H$HhB8z3
!ym5'h
i;7jJ(#V
HTML HkCme_y"
<HTML> 3J{'|3x
<HEAD> z5zm,Jw
<TITLE> Hello World! </TITLE> n$K_KU v
</HEAD> 8;@eY`0(
<BODY> 4+Kc
<p>Hello World!</p> ul1Vsj
</BODY> dzap]RpB
</HTML> ^8*.r+7p
uhLW/?q.
g [K8G
HQ9+ EJsb{$u
H LNWp$"
_7VU ,
fNumY|%3
INTERCAL MDZb|1.AT
PLEASE DO ,1 <- #13 -8:@xG2
DO ,1 SUB #1 <- #238 7KLq-u-8
DO ,1 SUB #2 <- #112 5VS<I\o}
DO ,1 SUB #3 <- #112 R8]bi|e)
DO ,1 SUB #4 <- #0 xC]/i(+bA
DO ,1 SUB #5 <- #64 aeIR}'H|
DO ,1 SUB #6 <- #238 x3
<Lx^;
DO ,1 SUB #7 <- #26 G#>nOB
DO ,1 SUB #8 <- #248 s4\2lBU?
DO ,1 SUB #9 <- #168 -u(#V#}OV?
DO ,1 SUB #10 <- #24 KA7nncg;,
DO ,1 SUB #11 <- #16 yCVBG
DO ,1 SUB #12 <- #158 : nn'>
DO ,1 SUB #13 <- #52 hvwr!(|W
PLEASE READ OUT ,1 )XWL'':bF
PLEASE GIVE UP :8FH{sqR
z%z$'m
+xa2e?A%L
Java v}U;@3W8U
public class Hello B("kE`
{ ]H*=Z:riu
public static void main(String[] args) )ALcmC?!#
{ ?UzHQr
System.out.println("Hello, world!"); O@VmV>m
} Ki2_Nh>tM
} j
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|b'AWI81D
w67Pw
JSP 8dNJZoV
<% TOs|f8ay
out.print("Hello, world!"); `CB TZG09
%> }T@AoIR0t
>2r/d
#=2~MXa@z7
MIXAL 5;+Bl@zGu
TERM EQU 19 the MIX console device number x[E`2_Ff 0
ORIG 1000 start address C.|MA(7
START OUT MSG(TERM) output data at address MSG L!5HE])<)
HLT halt execution :\Dm=Q\
MSG ALF "MIXAL" 43YusUv
ALF " HELL" sj1x>
ALF "O WOR" (]L=$u4
ALF "LD " ftbu:RtK^^
END START end of the program @r<w|x}
!|]%^G
!nVuvsbv
Nuva }j
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<..直接输出..> QHeUpJ/^
Hello, world! u<[Y6m
8GX@76o
<..或者..> >8c9-dTmf
4f+Ke*^[RA
<. 6 [IiJhVL
// 不带换行 "xKJ?8
? "Hello, world!" ;)*Drk*t,
4^
A\w
// 或者 H~&'`h1
_F$?Z
// 带换行 :D EZ$gi
?? 'Hello, world!' L))(g][;
.> zc_3\N
1
OX(eXF>
@YRBZ6FH
OCaml Yd9y8TqJ
let main () = Gh.02
print_endline "Hello world!";; LY7'wONx
1]"b.[P>
rTcH~s
D`
Pascal 4r %NtXAa
program Hello; d]<tFx>CQW
begin p ^Ruf?>
writeln('Hello, world!'); )Fbkt(1
end. aV1(DZ83
D n^RZLRhy
DLVf7/=3~
Perl R lv|DED$
#!/usr/local/bin/perl |&7l*j(\
print "Hello, world!\n"; 6<2 7}S
<7qM;)g
$8b/"Qm
PHP qzXch["So
<?php F"_SCA?9?
print("Hello, world!"); -YYQnN
?> Y|Z*|c.4OK
n/?_]
*5 5yF`
Pike UGIyNMY
#!/usr/local/bin/pike J::dY~@
int main() AV?*r-vWL.
{ \JX8`]|&
write("Hello, world!\n"); h4]yIM`8d
return 0; nlKWZYv
} N(Cfv3{
3SDw-k
]krOPM/
PL/I Al!P=h
Test: procedure options(main); 1L3L!@
declare My_String char(20) varying initialize('Hello, world!'); &BP%~
put skip list(My_String); M!,WU[mP
end Test; \'shnzs
wzF"^CJ
B>Mk "WjQ
Prolog
Y.ic=<0H
goal l =#uy
write("hello,world!"). A@GyKx%x$
~qRP.bV%f
#=h~Lr'UH
Python e4t'3So
#!/usr/local/bin/python b}Jcj
print "Hello, world!" r@ ]{`qA
) "'J]6
}oU0J
REXX hC,EO&
say "Hello, world!" i0hF9M
xGN&RjPk\
'z@(,5
Ruby ?EdF&^[3rD
#!/usr/bin/ruby JPRl/P$
print "Hello, world!\n" x5s Yo\
P)4SrqW_
>%t"VpvR
Scheme R'He(x
(display "Hello, world!") GC.
(newline) -B'<*Y
sdrALl;w|
&W*9'vSm.
sed (需要至少一行输入) +n7bbuxj(X
sed -ne '1s/.*/Hello, world!/p' X180_Kt2
^2=11
.z+[3Oj_E
Smalltalk @#;2P'KL
Transcript show: 'Hello, world!' SD |5v*
*1|&uE&_R
a=Pl3Uo
SNOBOL f/aSqhAW
OUTPUT = "Hello, world!" a(QYc?u
END EHmw(%a|+
]FP(,:Yw
id'E_]r
SQL _3.=| @L
create table MESSAGE (TEXT char(15)); \G:\36l
insert into MESSAGE (TEXT) values ('Hello, world!'); *bsS%qD]
select TEXT from MESSAGE; dL!PpLR$2
drop table MESSAGE; u.43b8!
C0J/FFBQ ^
e2~&I`ct
Tcl N2WQrTA:S+
#!/usr/local/bin/tcl "6o}g.
puts "Hello, world!" U,\3 !D0jt
Q#i[Y?$L
w,n&K6<
TScript edD1 9A
? "Hello, world!" bkTk:-L5:
[7oU =
)cxLpTr
Turing qXcHf6
put "Hello, world!" Jsde+G,N
-pvF~P?8U
llN#4D9s
UNIX-style shell [f 4Nq \i
程序中的/bin/sh可改为您使用的shell 7S|nn|\Kp
'GcN9D
#!/bin/sh 8Th{(J_
echo 'Hello, world!' ,t2M ur
D<%/:M
bLuAe
EA
GUI j#6@cO'`
=wEU+R_#o
Delphi _9*3Mr)2N
program HelloWorld; ,NB?_\$c
uses [M?'Nw/[S
Dialogs; :@K1pAh 4
begin zg>4/10P1q
ShowMessage('Hello, World!'); O7vJ`K(!
end. d.>Zn?u4L
:%!`R72
6ZKSet8
Nuva kbu.KU+
<. 4;_aFn
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) vf^`'
.> xO3-I@
f_'#wc6
X!6oviT|m
Visual Basic ,X^I]]
MsgBox "Hello, world!" xYSNop3_
'或者 K FM x(fD
Print "Hello, world!" w\SfzJN
x`9IQQ
0q}k"(9
Visual FoxPro GE?M. '!{{
? "Hello, world!" 6)5Akyz4V
1!/WC.0
bMU0h,|]
X11 : ZehBu
用一个程序 *{TB<^ *
9\f%+?p
xmessage 'Hello, world!' f~a]og5|G
iTUOJ3V7i
用C++和gtkmm 2 _e4%<!1
(
&N`N1
#include <iostream> q#pD}Xe$
#include <gtkmm/main.h> #u]'3en
#include <gtkmm/button.h> 3pU/Zbb,:
#include <gtkmm/window.h> {&3{_Ml
using namespace std; S1SsJo2\
5|:t$
class HelloWorld : public Gtk::Window 4 s&9A/&pC
{ $OGTHJA
public: $<DcbJW
HelloWorld(); m6wrG`-di
virtual ~HelloWorld();
{@E(p4W
protected: S~GL_#a
Gtk::Button m_button; <e)u8+(
virtual void on_button_clicked(); 7:Cq[u fl
}; Le,e,#hiY
_4^#VD#f
HelloWorld::HelloWorld() : m_button("Hello, world!") a I^Z0[P+
{ R-[t4BHn
set_border_width(10); u"hv
_ml
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); SyL:=NZ
add(m_button); qE:/~Q0
m_button.show(); 8r{:di*
} "fH"U1Bw
lJ>OuSd
HelloWorld::~HelloWorld() {} n=_jmR1
`bAOhaB,/
void HelloWorld::on_button_clicked() 25R6>CXsi
{ %Bxp
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cout << "Hello, world!" << endl; D2N<a= #
} N Ftmus
u*w'.5l
int main (int argc, char *argv[]) 4s_|6{ANS
{ QtSJ9;eP
Gtk::Main kit(argc, argv); glL.CkJ
HelloWorld helloworld; (,P6cWt}"
Gtk::Main::run(helloworld); _ -6IB>
} /l6r4aO2=
J
n~t>?
zLt7jxx
Java SN<Dxa8Iy
import java.awt.*; .=`r?#0
import java.awt.event.*; 0D==0n
SJ0IEPk
public class HelloFrame extends Frame G_1`NyI
{ _+=M)lPm
HelloFrame(String title) V(#z{!
{ i!KZg74V
super(title); =wcqCW,]
} **KkPjAO?
public void paint(Graphics g) G?$0OU
{ p 3`odmbN
super.paint(g); SSrYFu"
java.awt.Insets ins = this.getInsets(); ca6kqh"
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); 0pW?v:!H
} HzdyfZ!jR
public static void main(String args []) V!&O5T