“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。 ~g/"p`2-N
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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》。 Mu>
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以下是用不同语言写成的Hello World程序的几个例子: #4mRMsW5"
Ada nRc\!4
with Ada.Text_Io; use Ada.Text_Io; n5kGHL2
procedure Hello is 73rme,
begin r{v3XD/
Put_Line ("Hello, world!"); Fge%6hu
end Hello; -$<oY88
)nO ^Ay
}R<t=):
汇编语言 t9U6\ru
5NZuaN
x86 CPU,DOS,TASM Jm<NDE~rw
MODEL SMALL iSO xQ
IDEAL aI&~aezmN
STACK 100H < 8'
b
r1< 'l
DATASEG ybiTWM
HW DB 'Hello, world!$' 7JBs7LG
pF8$83S
CODESEG t$n Jmfzm
MOV AX, @data ^(^P#EEG
MOV DS, AX m@XX2l9:9
MOV DX, OFFSET HW ISC>]`
MOV AH, 09H ;/$pxD
INT 21H |1!fuB A
MOV AX, 4C00H `.J)Z=o
INT 21H ,5 ka{Q`K
END B1_9l3RM
gZtQtFi
Ob]\t/:%P
x86 CPU,GNU/Linux,NASM 'Hx#DhiFz
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Q,5PscE6&k
;Enter this into "hello.asm" then type: P}8hK
;"nasm -f elf hello.asm" %>Gb]dv?
;"ld hello.o -o hello" :4V5p
=v-
;"./hello" AVQcD`V3B
UCcr>
section .data ;data section declaration ,;}
msg db 'Hello World!',0AH w{DU<e:
len equ $-msg ;string length "'[M~Js
s 1M-(d Q
section .text ;code section declaration 8<;.
global _start ;entry point (start of execution) E7/UsUV.
_start: mov edx,len ;string length 8*u'D@0
mov ecx,msg ;string start ;GM`=M4
mov ebx,1 ;file handle: stdout
)1Bz0:
mov eax,4 ;sys_write qY8; k
#
int 80h ;kernel system call >KuNHuHu
mh"PA p
mov ebx,0 ;return value ,]0BmlD
mov eax,1 ;sys_exit d3rjj4N"z
int 80h ;kernel system call aU;X&g+_)
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E|9`J00
x86 CPU,Windows,MASM32 =)+^ y}xb
.386 gH(#<f@ZI
.model flat,stdcall 12#yHsk
option casemap:none O:GP uVb\
;Include 文件定义 n>u_>2Ikkj
include windows.inc 9<rs3 84
include user32.inc ]vf_4QW=
includelib user32.lib O<p=&=TD7
include kernel32.inc bJMsB|r
includelib kernel32.lib 9`92
>
;数据段 VE]TT><
.data 00;SK!+$
szCaption db 'A MessageBox!',0 ef*Z;HI0
szText db 'Hello,world!',0 Y`22DFO
;代码段 $&.(7F^D
.code 3_wR2AU~
start: OH>Gc-V
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK >P(.yQ8&kL
invoke ExitProcess,NULL /Cwwz
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> f8K0/z
end start &b:y#gvJ:
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AWK uUp>N^mmVH
BEGIN { print "Hello, world!" } Edc3YSg%;
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BASIC ]4c*Nh%8
传统版BASIC(例如GWBASIC): DJdhOLx
Q& d;UVp
10 PRINT "Hello, world!" 1k"t[^
20 END ;xh.95BP`
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或在提示符输入: a%m>v,
]7,0>
?"Hello, world!":END A+Un(tU2(
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现代版BASIC(例如Quick BASIC): ZX-A}
{7X9P<<L7
Print "Hello, world!" jEx8G3EL
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以下的语句在Quick BASIC中同样有效: 8rJf2zL
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? "Hello,world!" Z8h;3Ek
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B|^=2 >8s
BCPL SdI>
GET "LIBHDR" +sZY0(|K8
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LET START () BE 6ypHH
2X
$( tG"EbWi
WRITES ("Hello, world!*N") Y2uy@j*N
$) /viBJ`-O
z6qx9x|Ij
k^q~2
Befunge J8@bPS27q
"!dlrow olleH">v |1!OwQax
, iH)vLD
^_@ s}gdi
HN;f~EQT
-:!T@rV,d
Brainfuck gi_f8RP=2a
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Sng3 B
+++++++++++++++.>.+++.------.--------.>+.>. /sB,)>X
04X/(74
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C 5@bmm]
#include <stdio.h> ;;^?vS
D_z&G)
int main(void) |n s9ziTDI
{ `ST;";7!
printf("Hello, world!\n"); N4yQ,tG>aa
return 0; .zW.IM}Z
} p7Yb8#XfU
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C++ 5Yk|
#include <iostream> GXTjK!
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int main() #zn`)n
{ a\MJh+K
std::cout << "Hello, world!" << std::endl; Hs.5@ l
return 0; >O1u![9K|w
} 9Pm|a~[m
=p8iYtI
))6iVgSE$
C++/CLI kQ6YQsJ.*
int main() J<iiA:&J
{ gyMy;}a
System::Console::WriteLine("Hello, world!"); #@M'*X_%}K
} V8%( h[
dlV HyCW
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C# (C Sharp) !1+!;R@&H>
class HelloWorldApp Pf<BQ*n
{ 'Hq#9?<2M
public static void Main() tF!C']
{ gln
X C
System.Console.WriteLine("Hello, world!"); ^S(["6OJ(
} S }G3h a
} \xk8+= /A
<5c^DA
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COBOL {`% q0Nr
IDENTIFICATION DIVISION. u&Xn#fh
PROGRAM-ID. HELLO-WORLD. ^12}#I
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ENVIRONMENT DIVISION. >$A, B
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DATA DIVISION. S#ud<=@!9
hQJ-
~
PROCEDURE DIVISION. 2\xEMec
DISPLAY "Hello, world!". tjDCfJx*
STOP RUN. w}(Ht_6q{
}~NWOJ3;
{0} Q5
Common Lisp R8u9tTW
(format t "Hello world!~%") 7/c9azmC
J#k.!]r,Y
S\118TpD
DOS批处理 <:0d%YB)
@echo off lz0'E'%{P
echo "Hello, world!" EK^["_*A
u6p
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V34]5
Eiffel J*f..:m
class HELLO_WORLD v<S?"#
]F=
+JBYGYN&K
creation b@N*W]
make + gP 4MP
feature @1peJJ{
make is [JX=<a)U
local mr#XN&e
io:BASIC_IO zJtB?<
do ~VO?P fxZ
!!io :e TzjW=
io.put_string("%N Hello, world!") D5fhOq+g
end -- make i<uk}
end -- class HELLO_WORLD P*8DM3':
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UYOR@x #
Erlang lJXihr
-module(hello). ,OaPrAt-
-export([hello_world/0]). h*zHmkFR
JdA3O{mT)
hello_world() -> io:fwrite("Hello, World!\n"). e^Lt{/
`n`aA)|<
ef(OhIX
Forth 7TGLt z
." Hello, world!" CR ePwoza
08 aZU
wWUt44:0O
Fortran P}C;%KzA
WRITE(*,10) `Ot;KDz
10 FORMAT('Hello, World!') ]^@!ID$c
STOP hj-#pL-t
END
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[n;GP@A]R
|R$/oq
HTML p7Q
%)5o
<HTML> Wfyap)y
<HEAD> M8'
GbF=1
<TITLE> Hello World! </TITLE> sAU!u
</HEAD> ;b1*2-
<BODY> niP/i
<p>Hello World!</p> Sg}]5Mn`
</BODY> aJ}Cqk
</HTML> FrBJv<
/\1MG>#K
}CXL\,;
HQ9+ _^pg!j[Fy}
H =M+enSu
zkRL'-
`$,
\B
INTERCAL Z3]ut#`
PLEASE DO ,1 <- #13 ~Uw<E:?v
DO ,1 SUB #1 <- #238 ~$3X>?Q
DO ,1 SUB #2 <- #112 V$XCe
DO ,1 SUB #3 <- #112 4{oS(Vl!
DO ,1 SUB #4 <- #0 Yy:Q/zwo
DO ,1 SUB #5 <- #64 %o9;jX
DO ,1 SUB #6 <- #238 *~%#
=o
DO ,1 SUB #7 <- #26 h,C?%H+/0Q
DO ,1 SUB #8 <- #248 {Deg1V!x>
DO ,1 SUB #9 <- #168 .V:H~
DO ,1 SUB #10 <- #24 $x%VUms
DO ,1 SUB #11 <- #16 XQ]5W(EP
DO ,1 SUB #12 <- #158 LxC"j1wfl
DO ,1 SUB #13 <- #52 !F&Ss|(}
PLEASE READ OUT ,1 r % ]^(
PLEASE GIVE UP 6~j.S
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27!9LU
#=B~}
_
Java &7\q1X&Rr
public class Hello 3d|n\!1r
{ :.
ja~Q
public static void main(String[] args) w;p!~o &
{ 0au\X$)Q
System.out.println("Hello, world!"); cp7Rpqg
} 4uG:*0{Yx
} Nn;p1n
dN
'cx&:s
g5*Zg_G/
JSP M4 :}`p=
<% iB,Nqs3i*
out.print("Hello, world!"); u.s-/ g
%> $zvqjT:>
<U ?_-0
ZiS<vWa3R
MIXAL TZ,kmk#
TERM EQU 19 the MIX console device number szy^kj^2
ORIG 1000 start address b8@gv OB
START OUT MSG(TERM) output data at address MSG s-He
HLT halt execution ITu6m<V
MSG ALF "MIXAL" kM,$0@
ALF " HELL" naT;K0T=
ALF "O WOR" . !|3a
ALF "LD " nUL8*#p-
END START end of the program s2-p-n
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StP7t
Nuva {)QSxO
<..直接输出..> G3&l|@5
Hello, world! u-a* fT
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<..或者..> fQ^45ulz
|oSx*Gh
<. 3UBg"1IC
// 不带换行 {T]^C
? "Hello, world!" t9zF
WdW
j'V# =vH
// 或者 9Xg+$/
4ISZyO=
// 带换行
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?? 'Hello, world!' :Sx!jx>W
.> )PU?`yLTr
av&4:O!
K0i[D"
OCaml D4x~Vk%H
let main () = x*A_1_A
print_endline "Hello world!";; Ifm|_
8tM40/U$
0!c^pOq6
Pascal qe!\ oh
program Hello; S'jH
begin 0"~`U.k~M
writeln('Hello, world!'); g$\Z-!(
end. TqM(I[J7\
R~$W
fJ3*'(
Perl ?=%Q$|]-
#!/usr/local/bin/perl rH9wRY(
print "Hello, world!\n"; _z<y]?q
.CClc(bO_/
]Y'oxh
PHP |uT&`0T'e`
<?php Kzw)Q
print("Hello, world!"); H
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?> F]hKi`@
s:j"8ZH
==[a7|q
Pike $ePBw~yu
#!/usr/local/bin/pike (Z
YGfX
int main() H}OOkzwrA
{ 5Mfs)a4j.
write("Hello, world!\n"); cC_L4
return 0; D2`tWRm0
} ic}M)S FD;
K0#kW \4`
NM0[yh
PL/I 8#gS{
Test: procedure options(main); lD;="b
declare My_String char(20) varying initialize('Hello, world!'); S
aCa
put skip list(My_String); ,7mRb-*p
end Test; [/}y!;3iXM
%E95R8SL
:GU6v4u
Prolog edh?I1/
goal Hz}6XS@
write("hello,world!"). AHq;6cG
.!ThqYo
{
jnQoxN
Python *^XfEO
#!/usr/local/bin/python "x.|'
print "Hello, world!" LLn,pI2fL{
$'I+] ;
6B)3SC
REXX }E 5oa\1u
say "Hello, world!" 2 0Xqs,
h*_h M1 *;
"5]Fl8c?
Ruby W|K"0ab
#!/usr/bin/ruby :/N/u5.]
print "Hello, world!\n" &C eG4_Mi
7q&//*%yF
9]AiaV9
Scheme biCX:m+_?
(display "Hello, world!") 3Zm'09A-.
(newline) -_bHLoI
h&3*O[`
Ex'6 WN~kD
sed (需要至少一行输入) %[:\ZwT,-
sed -ne '1s/.*/Hello, world!/p' M
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({#9gTP2b
xkIRI1*!
Smalltalk x.r OP_rs
Transcript show: 'Hello, world!' I$K? ,
&TqY\l
$]4>;gTL'
SNOBOL }QszOi\fV1
OUTPUT = "Hello, world!" Yx21~:9}
END ), >jBYMJ
M+<xX)
d,fX3
SQL @V/Lqia
create table MESSAGE (TEXT char(15)); >E;-asD
insert into MESSAGE (TEXT) values ('Hello, world!'); ,EyZ2`|
select TEXT from MESSAGE; ;P9P2&c8c
drop table MESSAGE; h)[{{JSf
BlF]-dF\
W\s
]qsLS
Tcl j';V(ZY&BB
#!/usr/local/bin/tcl 6#S}EaWf
puts "Hello, world!" i5 x[1
`T H0*:aI
Wq_#46P-
TScript S^,1N4
? "Hello, world!" jtdhdA
j9zK=eG
]UG+<V
,:
Turing ]Mu
+
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put "Hello, world!" 8r^~`rL
pyEi@L1p
T:ye2yg
UNIX-style shell /"A)}>a
程序中的/bin/sh可改为您使用的shell S/}6AX#F4
:DP%>H|
#!/bin/sh +{V"a<D$m
echo 'Hello, world!' V`OeJVe
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~]HeoQK
GUI 6iwIEb
yvxdl=s
Delphi x0^O?UR
program HelloWorld; x!klnpGp
uses 2c>e Mfa
Dialogs; r<]Db&k
begin M)Iu'
ShowMessage('Hello, World!'); aRBTuLa)fo
end. }`g:)gJ
?{s!.U[T@
xOCHP|?
Nuva OhmKjY/}
<. % AqUVt9}
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) @5n!t1(
.> Kq}/`P
%G6ml,
%Z@+K_X9x
Visual Basic /+\m7IS
MsgBox "Hello, world!" Ha l,%W~e
'或者 mQmn &:R
Print "Hello, world!" !8q+W`{
)clSW
;[%_sVIy
Visual FoxPro RZm}%6##ZC
? "Hello, world!" '=!@s1;{[;
(0s7<&Iu
LG6VeYe|\X
X11 6QsH?!bu
用一个程序 3L$_OXx
-%]O-'
xmessage 'Hello, world!' %(a<(3r
,}15Cse
用C++和gtkmm 2 M17oAVN7D
BIf E+L(
#include <iostream> 8$O=HE*
#include <gtkmm/main.h> BZy&;P
#include <gtkmm/button.h> V eO$n*O
#include <gtkmm/window.h> iOpMU
using namespace std; jEj#|w
v. ,|#}0 o
class HelloWorld : public Gtk::Window >AsD6]
{ )Lht}I ]:
public: I`"8}d@Jm
HelloWorld(); ^|^ek
virtual ~HelloWorld(); :34#z.O
protected: ;seD{y7!
Gtk::Button m_button; %4#,y(dO
virtual void on_button_clicked(); rj[2XIO
}; 0z)
8i P
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HelloWorld::HelloWorld() : m_button("Hello, world!") Js7(TFQE
{ " , c1z\
set_border_width(10); >r%L=22+
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); "KQ3EI/g
add(m_button); dR"H,$UH
m_button.show(); 5b
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D
} !@mV$nTA
dkTj
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HelloWorld::~HelloWorld() {} T"1H%65`V
:USN`"
void HelloWorld::on_button_clicked() *Dr -{\9
{ 12 HBq8o
cout << "Hello, world!" << endl; `]^0lD=eI
} jf0D
cU8Rm\?
int main (int argc, char *argv[]) }X{#=*$GQ
{ HRkO.230
Gtk::Main kit(argc, argv); ^)ouL25Z*2
HelloWorld helloworld; 7Q,9j.
Gtk::Main::run(helloworld); <V?M~u[7f
}
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a1Q|su{H
Java fE"Q:K6r2
import java.awt.*; N9LBji;nH
import java.awt.event.*; j-wSsjLk
*yJCnoF
public class HelloFrame extends Frame oTOr,Mn0\6
{ R;,&s!\<
HelloFrame(String title) n4Fh*d ixg
{ 8A/;a{
super(title); Wyu$J
} R?"sM<3`e
public void paint(Graphics g) P7GuFn/p~2
{ zbH Nj(~
super.paint(g); q)%F#g
java.awt.Insets ins = this.getInsets(); PW(4-H
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); 1iWo*+5
} W7I.S5
public static void main(String args []) zfvMH"1
{ R<$_
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HelloFrame fr = new HelloFrame("Hello"); uq<kT [
+We_[Re`<
fr.addWindowListener( 0TA{E-A
new WindowAdapter() DBDHe-1[+
{ &YQ
public void windowClosing(WindowEvent e) 40TS=evG
{ KL:x!GsV5e
System.exit( 0 ); \7W>3
} %:I\M)t}k
} ,~^0AtLv
); eELJDSd
BV
fr.setResizable(true); OO?d[7Wt0
fr.setSize(500, 100); =O= 0 D
fr.setVisible(true); :s8^nEK
} K)z{R n
} 6"@+Jz
0* Ox>O>
EBjSK/
Java Applet MB]8iy8
Java Applet用于HTML文件。 @Qw~z0PE<l
^(<Ecdz(
HTML代码: e~#;ux
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