“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。 $f-f0t'
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 D-/K'|b
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以下是用不同语言写成的Hello World程序的几个例子: pr8eRV!x
Ada dooS|Mq
with Ada.Text_Io; use Ada.Text_Io; Ocq.<#||H
procedure Hello is _(}{=:M?
begin 99@uU[&IJ
Put_Line ("Hello, world!"); n#
%mL<
end Hello; u6AReL'f
IRemF@
<|NP!eMsw8
汇编语言 4eym$UWw
;[]{O5TB
x86 CPU,DOS,TASM :!M/9D*}0
MODEL SMALL #ra~Yb-F
IDEAL V fJYYR
STACK 100H vs/.'yD/C
vr|9NP]v
DATASEG +-=w`
HW DB 'Hello, world!$' Lt+ Cm$3
X ?/C9
CODESEG h&+dIk\[3
MOV AX, @data Ji_3*(
MOV DS, AX 3[E3]]OVa
MOV DX, OFFSET HW u=h:d+rq@
MOV AH, 09H kzG mDi
INT 21H {$,e@nn
MOV AX, 4C00H :A\8#]3
INT 21H ~a:0Q{>a
END 8.
[TPiUn'
A@BYd'}]
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x86 CPU,GNU/Linux,NASM L'LZK
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). $9DV}
;Enter this into "hello.asm" then type: sv0)sL
;"nasm -f elf hello.asm" wR\Y+Z
;"ld hello.o -o hello" d0y
[:
;"./hello" CA)DQYp{
"P<IQx
section .data ;data section declaration N/QTf1$
msg db 'Hello World!',0AH O(8Px
len equ $-msg ;string length tr6<89e(o
D.zEE-cGyb
section .text ;code section declaration Vv4w?K
global _start ;entry point (start of execution) k/A8|
_start: mov edx,len ;string length 4k5X'&Q
mov ecx,msg ;string start _jOu`1w
mov ebx,1 ;file handle: stdout Y<0;;tVf4U
mov eax,4 ;sys_write 5t`< KRz)I
int 80h ;kernel system call v/{LC4BF
oa(R,{_*q
mov ebx,0 ;return value i>YD_#w
mov eax,1 ;sys_exit fr$E'+l)
int 80h ;kernel system call }{Ab:+aNd
#Hl0>"k
,
=&RpW7]
x86 CPU,Windows,MASM32 ;*^2,_
.386 +G';no\h
.model flat,stdcall
`iYiAc
option casemap:none W 86`R
;Include 文件定义 Tf/jd 3>
include windows.inc &<}vs`W
include user32.inc F+mn d,3
includelib user32.lib hI.@!$~=
include kernel32.inc kLa9'c0
includelib kernel32.lib e^)+bmh
;数据段 N t]YhO
.data 8yEN)RqI
szCaption db 'A MessageBox!',0 64Gd^.Z
szText db 'Hello,world!',0 qRkY-0vBP
;代码段 o$]wd*+
.code (_h<<`@B
start:
C7#ji"t
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK )[&'\SOO
invoke ExitProcess,NULL ocCq$%Ka
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> #@s[!4)_I
end start lXH?*
e P]L
#=mLQSiQ
AWK yd#SB) &
BEGIN { print "Hello, world!" } P_S^)Yo
%5#ts/f
t*Hr(|.
BASIC FCL7Tn
传统版BASIC(例如GWBASIC): &)[?D<
N>kY$ *
10 PRINT "Hello, world!" 1h uU7xuf
20 END THC7e>P4
G`H4#@]
或在提示符输入: ]
TY$
dm8N;r/w
?"Hello, world!":END 86pujXjc'
m)l<2`CM
现代版BASIC(例如Quick BASIC): B:Y"X:Y
iNj*Gj
Print "Hello, world!" g\_J
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以下的语句在Quick BASIC中同样有效: oYOR%'0*m+
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? "Hello,world!" m)"gj**|y
Jbv66)0M
cAFYEx/(
BCPL M)sM G
C
GET "LIBHDR" $*N^bj
*AK{GfP_
LET START () BE ]fxYSm
$( !1G6ZC:z
WRITES ("Hello, world!*N") L@9@3?
$) @JB9qT
HRQ3v`P.
G8bc\]
Befunge {}gx;v)
"!dlrow olleH">v 'W'['TV
, 9)P-<
^_@ :wWPEhK
lICpfcc(+
`"@Pr,L
Brainfuck l9Xz,H
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< MTI[Mez
+++++++++++++++.>.+++.------.--------.>+.>. 'M20v-[
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py\KY R
C ]#$l"ss,
#include <stdio.h> m9~cQ!m
6:\0=k5
int main(void) PB[Y^q
{ a -[:RJW
printf("Hello, world!\n"); !*I0}I
~
return 0; )gNS%tc*K
} h"#[{$(
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wE*o1.
C++ 9NXL8QmC8
#include <iostream> 2TQyQ%
MS Qz,nn
int main() {>EM=ZZfg
{ M~h^~:Lk
std::cout << "Hello, world!" << std::endl; {Q?\%4>2
return 0; XC*!=h*
} _8QHx;}
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4hl`~&yDf
C++/CLI z4!Y9
int main() FaA'%P@
{ n]nb+_-97
System::Console::WriteLine("Hello, world!"); Z'Uc}M'U
} %"yy8~|
:t)<$dtf[
]h3{MTr/
C# (C Sharp) 3'*}ZDC
class HelloWorldApp $M:Ru@Du2
{ $u"*n\k>
public static void Main() ^ "D
{ K^6fg,&
System.Console.WriteLine("Hello, world!"); I_.Jo `lK~
} z5tOsU
} (Ts#^qC
zn+5pn&?
rl__3q
COBOL ;o#wK>pk%M
IDENTIFICATION DIVISION. .&Ik(792Z&
PROGRAM-ID. HELLO-WORLD. .\rJ|HpZ1J
1yK=Yf%B
ENVIRONMENT DIVISION. !C6[m1F
|g`:K0BI
DATA DIVISION. AQ<2 "s
#Y_v0.N
PROCEDURE DIVISION. E9N.b.Q)
DISPLAY "Hello, world!". *B*dWMh
STOP RUN. -|cB7P
!'5t(Zw5
c}u`L6!I3
Common Lisp ^2f2g>9j_C
(format t "Hello world!~%") _N1UL?
P`$Y73L
[kp#
DOS批处理 Yn>y1~
@echo off b0:5i<"w6
echo "Hello, world!" {G i:W/jJ
E|9'{3$
w8KVs\/
Eiffel H_&z-g`
class HELLO_WORLD JI7.:k;
A<*G;
creation w~|z0;hC
make * .P3fVlZ
feature (X|`|Y
make is S(NUuu}S
local VT:m!<^
io:BASIC_IO b&g`AnYT
do kN8?.V%Utw
!!io x7!YA>
io.put_string("%N Hello, world!") m&I5~kD
end -- make q% pjY
end -- class HELLO_WORLD /4{.J=R}
-;s-*$I
n[c/L8j
Erlang &{=`g+4n
-module(hello). V|T3blG?D
-export([hello_world/0]). uc?`,;8{`
{!av3Pz\
hello_world() -> io:fwrite("Hello, World!\n"). =JDa[_lpN
sqjv3=}
,0fYB*jk
Forth :/6gGU>pu
." Hello, world!" CR 6i=Nk"d
UEh-k"
U66}nN9
Fortran \CK f/:"
WRITE(*,10) RI0+9YJ
10 FORMAT('Hello, World!') g|
M@/Dl
STOP ^hIKDc!.m
END 4SGF8y@WU
t=6Wk4
SHt#%3EU
HTML $@}\T
<HTML> ZnXq+^Z4
<HEAD> jPyhn8Vw
<TITLE> Hello World! </TITLE> 'X]my
</HEAD> maINp"#
<BODY> P%^\<#Ya7
<p>Hello World!</p> (.J8Q
</BODY> m=e#1Hs
</HTML> z<Y
>phc
>^V3Z{;
+f]\>{o4
HQ9+ @uzzyp r>
H )WR*8659e
{WYmO1
c:f++||
INTERCAL =F>nqklc
PLEASE DO ,1 <- #13 GTBT0$9g.
DO ,1 SUB #1 <- #238 _>)=c<HL
DO ,1 SUB #2 <- #112 z ;KUIWg
DO ,1 SUB #3 <- #112 v:w $l{7
DO ,1 SUB #4 <- #0 =^D{ZZw{
DO ,1 SUB #5 <- #64 oEuo@\U05v
DO ,1 SUB #6 <- #238 B'`
jdyaE9
DO ,1 SUB #7 <- #26 iT}L9\
DO ,1 SUB #8 <- #248 ;x~[om21;
DO ,1 SUB #9 <- #168 4}>1I}!k
DO ,1 SUB #10 <- #24 HZ.Jc"+M
DO ,1 SUB #11 <- #16 V9r58hbVT
DO ,1 SUB #12 <- #158 {I~[a#^
DO ,1 SUB #13 <- #52 QnPgp(d<
PLEASE READ OUT ,1 MI<XLn!*
PLEASE GIVE UP z6
A`/ jF}
nbM7 >tnsk
.}||!
Java RI2Or9.
public class Hello t
9Dr%#
{ |0A:0'uA!
public static void main(String[] args) Uk0]A
{ dtT2h>h9
System.out.println("Hello, world!"); DHO+JtO
} q*kieqG
} SjRR8p<
!&=%#i
D8I)3cXa'
JSP zcTY"w\b
<% ~RS^Opoa
out.print("Hello, world!"); {Q@pF
%> |}y6U< I
5NECb4FG
.1 =8c\%
MIXAL
UW/{q`)
TERM EQU 19 the MIX console device number 7Yjxx+X9
ORIG 1000 start address 05>xQx?"m4
START OUT MSG(TERM) output data at address MSG FII>6c
HLT halt execution R.+yVO2
MSG ALF "MIXAL" {<_9QAS
ALF " HELL" iTq~^9G
ALF "O WOR" hm5A@Z
ALF "LD " )xMP
END START end of the program 8;r7ksE~
Q,
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>5|;8v-r
Nuva RZ:i60
<..直接输出..> d{LQr}_o$$
Hello, world! rH<iUiA?O
$CYB&|d
<..或者..> 8(Y=MW;g
[@_zsz,`L
<. 7:_\t!]
// 不带换行 |NiWr1&i0
? "Hello, world!" G?OwhX
9u\&kQxqD
// 或者 BkTGH.4G%
fP9k(mQX
// 带换行 fDa$TbhjI
?? 'Hello, world!' .C2.j[>
.> \I4*|6kA
qt#a_F*rV
Y=6b oT
OCaml K)`\u7Bu
let main () = L,F )l2
print_endline "Hello world!";; G *f5B
2 #+g4
VK)K#!O8
Pascal [-bT_X
program Hello; vKX
$Nf
begin wPl!}HNf
writeln('Hello, world!'); o5N];Nj
end. QzQTE-SQ
Va1 eG]jQ
-pRyN]YD
Perl t:
=
#!/usr/local/bin/perl "lp),
print "Hello, world!\n"; fi[c^e+IX
O_p:`h:;M
oR=^NEJv
PHP Ass8c]H@
<?php <Dr*^GX>?
print("Hello, world!"); ,cvLvN8
?> gJyFt8Z<
QPH2TXw
M- 2:$;D
Pike "$Wi SR
#!/usr/local/bin/pike <9S?wju4W'
int main() KJwkkCE/=
{ I]`>m3SJ
write("Hello, world!\n"); 2wWL]`(E
return 0; z:aT5D
} COw]1R
9GdrJ~h
S!GjCog^J
PL/I 'U)|m
Test: procedure options(main); *XmOWV2Y_
declare My_String char(20) varying initialize('Hello, world!'); +|OkT
put skip list(My_String); Bu'PDy~W,
end Test; /
4K*iq
EX[X|"r
>a]4}
Prolog sBuVm<H
goal g#V3u=I8~
write("hello,world!"). d0b--v/
2O|o%`?
FxKb
Python DlR&Lnv
#!/usr/local/bin/python 6 qK0G$>
print "Hello, world!" `he{"0U~S
p;VqkSQ76
N,w;s-*
REXX xa#:oKF3
say "Hello, world!" 5hE8b
{V
yKO84cSl
/FiFtAbb
Ruby q4$R?q:^
#!/usr/bin/ruby rG"}CX`]:
print "Hello, world!\n" aW3yl}`{
Osb"$8im
R0fZ9_d7}
Scheme fV3!x,H
(display "Hello, world!") }Kq5!XJV9C
(newline) P,!k^J3:l
>R?EJ;h
181-m7W
sed (需要至少一行输入) {Gs&u>>R"^
sed -ne '1s/.*/Hello, world!/p' 4yC{BRbi
VG'oy
/D_8uTS>d[
Smalltalk #UC4l]Ru A
Transcript show: 'Hello, world!' fp9ksxb@m
Z{/C4" F
y^zVb\"4
SNOBOL Vzz0)`*hQ
OUTPUT = "Hello, world!" Yuze9b\[
END cW),Y|8
!+ IxPn
U<eVLfSij
SQL Y[;Pl$
create table MESSAGE (TEXT char(15)); qJW>Y}
insert into MESSAGE (TEXT) values ('Hello, world!'); h^$>{0"
select TEXT from MESSAGE; dH!k{3bL
drop table MESSAGE; @6i^wC
VVJhQ bP
C4Q^WU+$j
Tcl #JZf]rtp
#!/usr/local/bin/tcl C^r 3r6
puts "Hello, world!" +U^dllL7
ap\2={u^|
*ZGQ`#1.X6
TScript x}1(okc
? "Hello, world!" ~SJOynSz,
ls,gQ]B:P
M!=v"C#
Turing quf,ZK5
put "Hello, world!" 2Z,;#t
ekP=/;T#S
YjS|Ht->
UNIX-style shell J mFzSR?}
程序中的/bin/sh可改为您使用的shell YFLWkdqAY
iTbmD
#!/bin/sh ,^|+n()O
echo 'Hello, world!' [}lv!KmzW
R]/F{Xs
^k^%w/fo
GUI xVKx#X9yk
>Z|4/PF
Delphi G`mC=*Ma;
program HelloWorld; r7*[k[^[^
uses ~srmlBi6
Dialogs; 7z=Ss'O]
begin TDY}oGmNn
ShowMessage('Hello, World!'); +zs;>'Sf
end. <g,k[
O(/K@e
1WcT>_$
Nuva J~<:yBup}
<. X~G"TT$)
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) x`%;Q@G
.> tq@<8?
LiQs;$V
pq-zy6^
Visual Basic K(6=)
MsgBox "Hello, world!" &J"a` l2
'或者 Z/;rM8[{&
Print "Hello, world!" zK:/
1
|ki#MtCp
gNLjk4H,S[
Visual FoxPro X^9_'T9
? "Hello, world!" pPh_p@3I
{(7.X4\x
q97Dn[>3
X11 +#Ov9b
用一个程序 o,Ha-z]f
ENJ]
xmessage 'Hello, world!' D9H|]W ~
<ze'o.c
用C++和gtkmm 2 l*'jqR')h^
`?=AgGg
#include <iostream> LUo3y'
#include <gtkmm/main.h> .Ji
r<"*<
#include <gtkmm/button.h> {Fb)Z"8]
#include <gtkmm/window.h> ej%C<0/%n
using namespace std; 3tIIBOwg[
1oX"}YY1
class HelloWorld : public Gtk::Window ~Zaxn~u:
{ sur2Mw(M"
public: T
X6Ydd
HelloWorld(); `2S{.s
virtual ~HelloWorld(); eIof{#
protected: fU)hn
Gtk::Button m_button; mL6/NSSz
virtual void on_button_clicked(); &.(ZO]
}; 7Zu!s]t
/B1<N}
HelloWorld::HelloWorld() : m_button("Hello, world!") x:l`e:`y9
{ 4eaC18?
set_border_width(10); 4f"be
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); XJ@ /r,2
add(m_button); fEQ<L!'
m_button.show(); >%[(C*Cks
} ?m?e2{]u,
_FdWV?
HelloWorld::~HelloWorld() {} }clFaT>m?
`GPK$ue
void HelloWorld::on_button_clicked() TF=S \
Q
{ 2N)Ywqvj
cout << "Hello, world!" << endl; S$JM01
} sL&u%7>Re
;xth#j
int main (int argc, char *argv[]) 5YC(gv3/
{ 79x^zqLb
Gtk::Main kit(argc, argv); *^.b}K%
HelloWorld helloworld; -BoN}xE4
Gtk::Main::run(helloworld); I}k!i+Yl
} dc?Yk3(Y
wEDU*}~
-h.YQC`
Java B0R[f
import java.awt.*; WUa-hm2:
import java.awt.event.*; Brpin
AQ0L9?
public class HelloFrame extends Frame /
m?Z!
{ 0|GxOzNd
HelloFrame(String title) dr/!wr'&hS
{ {5%<@<?)
super(title); `b7o
} 7d4RtdI
public void paint(Graphics g) orHVL 2
KK
{ UNY>Q7
super.paint(g); Y$Uvt_
java.awt.Insets ins = this.getInsets(); O^:Pr8|{J
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); Y_)04dmr@[
} >eUAHmXQ|
public static void main(String args []) xc*ys-Nv
{ s#qq%
@
HelloFrame fr = new HelloFrame("Hello"); :'!?dszS
cL1cBWd
fr.addWindowListener( 7<