“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。 V[RsSZx
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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》。 &]_2tN=S$
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以下是用不同语言写成的Hello World程序的几个例子: Ak'=/`+ p
Ada ,}jey72/k
with Ada.Text_Io; use Ada.Text_Io; Rxfhk,I
procedure Hello is E-?@9!2
&
begin G%#M17
Put_Line ("Hello, world!"); 8`GN8F
end Hello; &RL
j^A!
NB=!1;^J
6
#m:=
汇编语言 T_NN.Ol
qvN`46c
x86 CPU,DOS,TASM aWTvowA
MODEL SMALL Hph$Z1{
IDEAL k0^t$J
W
STACK 100H 7~
=r9-&G
|J:kL3g
DATASEG @||GMA+|
HW DB 'Hello, world!$' UJ^MS4;I3
! a!^'2
CODESEG 3:ELYn
MOV AX, @data V|`w/P9g4
MOV DS, AX g3Z"ri~!G
MOV DX, OFFSET HW ,JONc9
MOV AH, 09H 3U!#rz"
INT 21H (\o &Gl
MOV AX, 4C00H /4wPMAlb
INT 21H CjT]!D)s
END 3^-yw`
RJa1pYK
H5X.CcI&}
x86 CPU,GNU/Linux,NASM r
t\eze_5A
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). "IuPg=|#
;Enter this into "hello.asm" then type: 8d|#W
;"nasm -f elf hello.asm" 8=Aoj%l#
;"ld hello.o -o hello" W%_Cda5,
;"./hello" >V|KS(}s
'eDV-cB
section .data ;data section declaration \s^4f#
msg db 'Hello World!',0AH jk9/EmV*r
len equ $-msg ;string length ^nGKuW7\
Z.E@aml\
section .text ;code section declaration =?oYEO7
global _start ;entry point (start of execution) 3`U^sr:[%
_start: mov edx,len ;string length }]!?t~5*
mov ecx,msg ;string start \_|g}&}6Y
mov ebx,1 ;file handle: stdout *DS>#x@3*i
mov eax,4 ;sys_write 8Luw<Q
int 80h ;kernel system call ,WgEl4
M'>8P6O
mov ebx,0 ;return value 7rSads
mov eax,1 ;sys_exit 6~.{~+Bd
int 80h ;kernel system call S*w; $`Y
>4iVVs
_sX@BE
x86 CPU,Windows,MASM32 fj:q_P67o
.386 ,cCBAOueO
.model flat,stdcall )FSa]1t;x
option casemap:none c6~<vV'}
;Include 文件定义 1 Q6~O2a
include windows.inc ||^+(
include user32.inc ka?EXF:
includelib user32.lib K bM1b
include kernel32.inc o|bm=&f
includelib kernel32.lib /j$`Cq3I
;数据段 'd |*n#Dqc
.data SEXmVFsQ
szCaption db 'A MessageBox!',0 [iGL~RiXtn
szText db 'Hello,world!',0 >))K%\p
;代码段 6#upBF:
.code L7OFZ|gUz
start: kS1?%E,)q
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK <BX'Owbs!O
invoke ExitProcess,NULL ukwO%JAr
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> #2*6esP
end start klxNGxWAX
MR}h}JEx0
cVuT|b^
AWK 9`Zwa_Tni
BEGIN { print "Hello, world!" } :>3/*"vx?G
*EllE+M{n
r31)Ed$
BASIC @*^%^ P
传统版BASIC(例如GWBASIC): L yNLz
m5
7x//4G
10 PRINT "Hello, world!" $ )orXe|
20 END )Nnrsa
xjH({(/B>a
或在提示符输入: u=f}t=3
H}PZJf_E
?"Hello, world!":END
lqZUU92;
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现代版BASIC(例如Quick BASIC): eiJ~1HX)
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Print "Hello, world!" GFfZ TA
3fd?xhWbN
以下的语句在Quick BASIC中同样有效: 7;3;8Q FX
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? "Hello,world!" D]NJ^.X
k4+ Q$3"
v0u, :eZ4
BCPL Sgq" 3(+%,
GET "LIBHDR" |DkK7gw
M&J$9X
LET START () BE 'h3yxf}\
$( ?~=5x
WRITES ("Hello, world!*N") HC(7,3
$) 7QM1E(cMg
z2IKd'Wy
5\.w\
Befunge a_U[!`/w
"!dlrow olleH">v q:<vl^<j
, ~=k?ea/>
^_@ h42dk(B
8Bwm+LYr-
NT;cTa=;
Brainfuck G6q*U,
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< O*udV E>
+++++++++++++++.>.+++.------.--------.>+.>. 6~tj"34_
BXa.XZ<n(
v%E~sX&CG
C ykD-L^}
#include <stdio.h> 4`'V%)M
?F/)<r
int main(void) .kp3<.
{ Kdr}7#c
printf("Hello, world!\n"); {VT**o
return 0; "] [u
} pz ~REsx
Hd89./v`:
Mt\.?V:
C++ vEC#W43l
#include <iostream> .Zm de*b
*^i"q\n5(
int main() 1HBWOV7z.?
{ bEB9J-
Q
std::cout << "Hello, world!" << std::endl; +O!4~k^
return 0; 7_c/wbA#me
} tKYg
gPcOm
b
gVI T6"/
C++/CLI ^a?g~G
int main() X]c>clk,
{ X6so)1jJ
System::Console::WriteLine("Hello, world!"); r:--DKt
} Q9{f'B
.tA=5QY,
NKMVp/66D
C# (C Sharp) d-'BT(@:
class HelloWorldApp f[Xsri
{ :uB(PeAv*
public static void Main() `i)Pf WdBN
{ >6Ody<JPHP
System.Console.WriteLine("Hello, world!"); q_z ;kCHM
} =h,J!0Y
} ?yKG\tPhM
hUe\sv!x?
Z. ,pcnaQb
COBOL ?eDZ-u9)
IDENTIFICATION DIVISION. &EJ/Rl
PROGRAM-ID. HELLO-WORLD. 79Ur1-]/
vf?Xt
ENVIRONMENT DIVISION. GsU.Lkf
bwe)_<c
DATA DIVISION. 9v?rNJs
}#phNn6
PROCEDURE DIVISION. R#4f_9e<Z
DISPLAY "Hello, world!". Mw|lEctN0
STOP RUN. hp$1c
p
Cgm!t?/
0y3C
/>a
Common Lisp DqA$%b
yyE
(format t "Hello world!~%") @YbZ"Jb
_V(FHjY
zuI7Px
DOS批处理
3 EOuJ
@echo off FZtT2Z4&i
echo "Hello, world!" aEn*vun
6f)7*j~
vQ8$C 3
Eiffel j<A<\K
class HELLO_WORLD gUH|?@f
}fL
] }&
creation H
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make ~toR)=Yv
feature <4P.B?-/t
make is C=(~[ Y
local ";TqYk=-
io:BASIC_IO k,LaFe`W
do 7ea%mg\
!!io &(h@]F!
io.put_string("%N Hello, world!") L~*nI d
end -- make T@mYHKu
end -- class HELLO_WORLD Mo]aB:a
>%A~ :
y(X^wC
Erlang ?d_vD@+\
-module(hello). q@i.4>x
-export([hello_world/0]). 6W9lKD_i
YM#J_sy@J.
hello_world() -> io:fwrite("Hello, World!\n"). ]l^"A~va
zqxN/H]z
?MOjtAG0_~
Forth )i[K1$x2
." Hello, world!" CR F&HvSt}l5
_mTNK^gB
`2`h4[^ [X
Fortran # blh9.V&F
WRITE(*,10) pV*d"~T
10 FORMAT('Hello, World!') ~h$
H@&5
STOP .F3~eas
END VVqpzDoXG
oxLO[js
x LGMN)@r
HTML rges`&0
<HTML> %'eaW
<HEAD> jvhD_L/
<TITLE> Hello World! </TITLE> Tsocc5gWZ*
</HEAD> h9QQ8}g
<BODY> 7%W@Hr,%F
<p>Hello World!</p> ihD|e&
</BODY> '![VA8
</HTML> G0(A~Q"
e}ivvs2
$]MOAj"LH
HQ9+ H[N~)3x
H cFHSMRB|P
vj"['6Xa
KN~Rep cz@
INTERCAL uFL!*#A
PLEASE DO ,1 <- #13 @%!Gj{
DO ,1 SUB #1 <- #238 Y#FSU#a$<
DO ,1 SUB #2 <- #112 ([]\7}+8
DO ,1 SUB #3 <- #112 gB0Q0d3\G,
DO ,1 SUB #4 <- #0 M7ug<
8i
DO ,1 SUB #5 <- #64 [ZD`t,x(
DO ,1 SUB #6 <- #238 X/H2c"!t
DO ,1 SUB #7 <- #26 )2J#pz?.
DO ,1 SUB #8 <- #248 zLg_0r*h1
DO ,1 SUB #9 <- #168 pIY3ft\
DO ,1 SUB #10 <- #24 ceAefKdb
DO ,1 SUB #11 <- #16 Ryn@">sVI
DO ,1 SUB #12 <- #158 u?KG%
DO ,1 SUB #13 <- #52 +f,I$&d.V
PLEASE READ OUT ,1 r@ba1*y0
PLEASE GIVE UP BJjx y0+
Pt7C/
qM/
1~vv<`-
Java ZVz*1]}
public class Hello *}Rd%'
{ n"<'F4r
public static void main(String[] args) X
[;n149o
{ Tvw(Sq};
System.out.println("Hello, world!"); y2Vc[o(NP
} yppXecFJ
} 2>.>q9J(
l#a*w
Pz-=Eq
JSP #!4`t]E<
<% Mm%b8#Fe!
out.print("Hello, world!"); xI8v'[3
%> e*o:ltP./
P7!gUxcv9Y
\>+BvF
MIXAL Jo9c|\4
TERM EQU 19 the MIX console device number
PRK*7-(
ORIG 1000 start address EC?U#!kv
START OUT MSG(TERM) output data at address MSG BXr._y, cr
HLT halt execution 6+Y@dJnPT
MSG ALF "MIXAL" EI@ep~
ALF " HELL" kv`5"pa7M
ALF "O WOR" +'UxO'v3]
ALF "LD " t_Ul;HVPS
END START end of the program +Q!Kj7EU/
(ewcj\l4*
IXsOTBM
Nuva "~T06!F45
<..直接输出..> <"`P;,S
Hello, world! !&o>zU.
rm,h\
<..或者..> `(8RK
uQkQ#'e|
<. ,J'@e+jV
// 不带换行 qb5IpI{U
? "Hello, world!" #e6x_o|
nG"Ae8r
// 或者 }:+P{
a!:R_P}7
// 带换行 Ls NJ3oy
?? 'Hello, world!' /7C%m:
.> cQ/T:E7$`
s=n_(}{ q
l%7^'nDn
OCaml w4Ku1G#jC
let main () = _2WIi/6K
print_endline "Hello world!";; M:w]g` LKl
~T&X#i
dZ\T@9+j+
Pascal LY!.u?D`P
program Hello; zxvowM
begin (rSBzM]H
writeln('Hello, world!'); 6d YUMqQ
end. =Lr#
*ep[
>{juw&Uu
J+*n}He,
Perl 9R4q^tGR\
#!/usr/local/bin/perl ooT~R2u
print "Hello, world!\n"; BO;LK-V
I^S{V^Ty
S]biN]+7s
PHP 9|//_4]
<?php Q3x.qz
print("Hello, world!"); 2LH.I f
?> #NWc<Dd
~
*P9_<
+6x:+9S
Pike ^os|yRzV*M
#!/usr/local/bin/pike ow,=M%x"0
int main() +#ANc;2g
{ ;,:w%.
write("Hello, world!\n"); LzkwgcR
return 0; [T#9#3
} NGb\e5?
_xU2C<)1&
WG3 .qLH%
PL/I g
[+_T{
Test: procedure options(main); Q?W}]RW
declare My_String char(20) varying initialize('Hello, world!'); z@J;sz
put skip list(My_String); lF!Iu.MM 9
end Test; WhR'MkfL
ca8.8uHY\
pc<A
,?
Prolog h`/1JjP
goal Toc="F`SW
write("hello,world!"). W>`#`u
6o]X.plr
k%lz%r
Python FcZ)_m6m
#!/usr/local/bin/python RDQK_Ef:
print "Hello, world!" A+F@JpV
XxE>KeP
n7K\\|X
REXX +W9#^
say "Hello, world!" L\X2Olfz1
8p~G)J3U
D[}qhDlX
Ruby `?:X-dh_
#!/usr/bin/ruby w97B)Kn6
print "Hello, world!\n" 2:& [r*
2u'h,on?
j4.deQ,
Scheme 4';(\42
(display "Hello, world!") bO?Us
(newline) C\p _
XvspE}~y
eLAhfG
sed (需要至少一行输入) ~eHu+pv
sed -ne '1s/.*/Hello, world!/p' ZtqN8$[6n
Nb@zn0A(;
%QrpFE5V5
Smalltalk au 5qbP
Transcript show: 'Hello, world!' ;p 'Ej'E
%{M&"M v
:0RfA%
SNOBOL U49
`!~b7
OUTPUT = "Hello, world!" +cnBEv~y
END \4|o5, +(@
o2M4?}TpIV
Y:}!W
SQL \@HsMV2+zN
create table MESSAGE (TEXT char(15)); )S6"I
insert into MESSAGE (TEXT) values ('Hello, world!'); ^J Y]w^u
select TEXT from MESSAGE; &%4*~;o
drop table MESSAGE; *(sFr E
w*"h#^1z
1 ojy_
Tcl /NFcIU
#!/usr/local/bin/tcl l TRQ/B
puts "Hello, world!" Zm!5X9^!
+_LWN8F
W{v-(pW
TScript A[O' e
? "Hello, world!" COf>H0^%Q
.IJgkP)!]
ESAFsJ$r;
Turing s5'So@L8
put "Hello, world!" KcQe1mT!+
K-b'jP\
Pe_FW8e#J
UNIX-style shell O}IRM|r"
程序中的/bin/sh可改为您使用的shell ,HE +|y#
5b^`M
#!/bin/sh k3wAbGp
echo 'Hello, world!' v}AVIdR
>?Ps5n]b
L4L[@tMPmY
GUI CsND:m
Tp?l;DU
Delphi EFb"{L
program HelloWorld; `vPc&.-K
uses w,QO!)j!
Dialogs; 0'9zXJ"
begin 5E!G
ShowMessage('Hello, World!'); oj1,DU
end. 9(;I+.;8k
D~s
TQfWr
CAl]Kpc
Nuva n@Ar%%\
<. 4D-4BxN*
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) }}'0r2S
.> i>`!W|=_
qOk=:1`3
3'zm)SXJ
Visual Basic 9As K=/Buf
MsgBox "Hello, world!" :"oQ _bLT
'或者 xi
=\]
Print "Hello, world!" (;@\gRL
E5J2=xVW#
Y([YDn
Visual FoxPro E{Ux|r~
? "Hello, world!" JBKCa 3
/{9"O y7E
_a 40lcP
X11 VV1I2YcKt
用一个程序 \)Bws `
5/) ,HGxi
xmessage 'Hello, world!' ,{br6*E
GDW$R`2
用C++和gtkmm 2 J!GWP:b3
cj!Ew}o40D
#include <iostream> k7gm)}RKcu
#include <gtkmm/main.h> <+oTYPgD9
#include <gtkmm/button.h> Rn-RMD{dh
#include <gtkmm/window.h> ?U`~,oI0
using namespace std; RN%*3{-
,' m<YTF
class HelloWorld : public Gtk::Window '!%Zf;Fjr
{ uzx?U3.\
public: hZobFf
HelloWorld(); G-)Q*p{i|
virtual ~HelloWorld(); I,@f*o
protected: 18AKM
Gtk::Button m_button; pUz;e#J|
virtual void on_button_clicked(); z[I3k
}; `;9Z?]}`
1 %nE
HelloWorld::HelloWorld() : m_button("Hello, world!") FesXY856E
{ sr&hQ
set_border_width(10); f;nO$h[Qb
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); kT+Idu
add(m_button); X. =%
m_button.show(); Ae0jfTv
} fgW>U*.ar
vThK@P!s
HelloWorld::~HelloWorld() {} O7_u9lz2
R4V~+tnbG&
void HelloWorld::on_button_clicked() v?U;o&L(
{ &z@~n
cout << "Hello, world!" << endl; &pCNOHi|
} [a<ucJ
&C.{7ZNt
int main (int argc, char *argv[]) mct$.{~
{ oA;sP'
Gtk::Main kit(argc, argv); O{^ET:K@
HelloWorld helloworld; 9"=1 O
Gtk::Main::run(helloworld); \!erP!$x.
} $X9`~Sv _
bk-veJR
TA.ugF)h
Java R3;,EL{H&
import java.awt.*; FG^Jh5
import java.awt.event.*; ld-Cb3R^
c?;YufH'j
public class HelloFrame extends Frame }'y=JV>l
{ q;^Q1[Ari
HelloFrame(String title) W_%p'8,
{ 8+>r!)Q+
super(title); 5u<F0$qHc
} I,*zZNvRi
public void paint(Graphics g) atW=xn
{ UkE fuH
super.paint(g); _NfdJ=[Xh
java.awt.Insets ins = this.getInsets(); ]Cfjs33H
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); 6z6\-45
} a,GOS:?O5
public static void main(String args []) <Be:fnPX7
{ [IF5Iv\b
HelloFrame fr = new HelloFrame("Hello"); Pp*:rA"N
< )dqv0=
fr.addWindowListener( ]Kutuf$t
new WindowAdapter() Y;X_E7U
{ m5wfQ_}}ss
public void windowClosing(WindowEvent e) mzh8<w?ns
{ {<~oa+"
System.exit( 0 ); $S_xrrE#
} *Vbf;=Mb
} VO (KQx
); }=dUASL
fr.setResizable(true); &%@b;)]J
fr.setSize(500, 100); B# >7;xy>
fr.setVisible(true); qHZ!~Kq,"'
} ^ZxT0oaL
} MY8[)<q"
<6
HrHw_
KI@OEy
Java Applet 4jOq.j
Java Applet用于HTML文件。 <sALA~p|0
7Rba@ cs9
HTML代码: Xjy5Yj
U?bQBHIC
<HTML> *{t]fds
<HEAD> Lp|7s8?
<TITLE>Hello World</TITLE> <|!?V"`3
</HEAD> G`/5=
<BODY> u<VR;p:y
k10g %K4g
HelloWorld Program says: ~rUcko8
5^,"Ve|
<APPLET CODE="HelloWorld.class" WIDTH=600 HEIGHT=100> Qj1qx;S
</APPLET> Jv,*rQH
^\ N@qL
</BODY> b"DV8fdX
</HTML> 6T?$m7c
.T2P%Jn.
Java代码: pR3@loFQ`o
yDuMn<