“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'nl
fT[6Cw5w`
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》。 qnrf%rS
O*H:CW
以下是用不同语言写成的Hello World程序的几个例子: MZ=U}
&F
Ada }UXj|SY
with Ada.Text_Io; use Ada.Text_Io; x@v,qF$K
procedure Hello is WB6g i2
begin gSZNsiH
Put_Line ("Hello, world!"); >kz5azV0
end Hello; V/"0'H\"1
6xk"bIp
9{70l539
汇编语言 /-^gK^
WE|L{
x86 CPU,DOS,TASM fS1N(RZ1
MODEL SMALL y"cK@sOo
IDEAL `Wn0v2@a(~
STACK 100H Ea!}r|~]0
#8;^ys1f
DATASEG tI*u"%#t
HW DB 'Hello, world!$' >|6[uKrO
Y'Wj7P
CODESEG _#f/VE
MOV AX, @data q,aWF5m@
MOV DS, AX +**H7: bO
MOV DX, OFFSET HW ^ T(l3r
MOV AH, 09H 9^v|~f
INT 21H "Z&qOQg%3
MOV AX, 4C00H ^yy\CtG
INT 21H O4\GL
END |rW}s+Kcr
"SLN8x49(
w]tv<U={
x86 CPU,GNU/Linux,NASM Eqp?cKrji
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Mr2dhSQ!
;Enter this into "hello.asm" then type: Fdm7k){A
;"nasm -f elf hello.asm" BxG0vJN|
;"ld hello.o -o hello" aNn < NW
;"./hello" nLto=tNUO
>9+@oGe(E
section .data ;data section declaration ~K:#a$!%,
msg db 'Hello World!',0AH b[GZ sXD-
len equ $-msg ;string length &oTSff>p}
[%P_
Y/
section .text ;code section declaration 4%\L8:
global _start ;entry point (start of execution) D*vrQ9
8
_start: mov edx,len ;string length p'KU!I}
mov ecx,msg ;string start <%>Q$b5
mov ebx,1 ;file handle: stdout hAG++<H{
mov eax,4 ;sys_write 6by5VESx
int 80h ;kernel system call lCWk)m8
w gATfygr
mov ebx,0 ;return value ^CZn<$
mov eax,1 ;sys_exit ;?= ] ffa{
int 80h ;kernel system call \ts:'
G{+sC2
B*Hp
x86 CPU,Windows,MASM32 k/?+jb
.386 ghbxRnU}
.model flat,stdcall n$5,B*
option casemap:none a3HT1!M)
;Include 文件定义 UgSSZ05Lq
include windows.inc W
qci51y>#
include user32.inc )P:TVe9`
includelib user32.lib u6t.$a!5
include kernel32.inc pL-p
includelib kernel32.lib xzW]D0o0
;数据段 ^uIZs}=+
.data wbd>By(T1
szCaption db 'A MessageBox!',0 {-Yp~HQF
szText db 'Hello,world!',0 GG(rp]rgl
;代码段 U+~0m!|4
.code {(ey!O
start: uO,90g[C/R
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 3<m"z9$
invoke ExitProcess,NULL HQ/PHUg2
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> *ubLuC+b
end start 9g^@dfBV
:#d$[:r#
CN\s,. ]
AWK .H7"nt^
BEGIN { print "Hello, world!" } B`"-~4YAf
!x;T2l
[g&Q_+,j
BASIC 8*>6+"w
传统版BASIC(例如GWBASIC): RUX!(Xw
h!yF
10 PRINT "Hello, world!" 7"
Dw4}T
20 END FT `y3~
Ug3PZ7lK
或在提示符输入: -Zocu<Rs
;#`Z(A}
?"Hello, world!":END f7d)
y'2K7\>E
现代版BASIC(例如Quick BASIC): r{>tTJFD(:
>/5D/}4
Print "Hello, world!" %J~8a _vO
A ;Z%-x
以下的语句在Quick BASIC中同样有效: qZ`@Ro
kj@#oLd%
? "Hello,world!" Qs#v/r
53BXz=
k
WAqR70{KM
BCPL isWB)$q
GET "LIBHDR" 'e;*V$+
[A*vl9=
LET START () BE Gxm+5q
$( |],{kUIXO
WRITES ("Hello, world!*N") ""CJlqU
$) I*6L`#j[
9co
-W+
*v l_3S5_
Befunge dr,j~ s
"!dlrow olleH">v 3~s0ux[
, 6NJ La|&n
^_@ U
NQup;#h
9XobTi3+'
?D57HCd`n
Brainfuck \m5:~,p=
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< <C#
s0UX
+++++++++++++++.>.+++.------.--------.>+.>. 1PLKcU
~z32%k
>=C)\Yfu)
C XRP/E_4
#include <stdio.h> a^4(7
F_YZV)q!W
int main(void) z7HC6{g%X
{ 0e:K iUr
printf("Hello, world!\n"); J
+<|8D
return 0; VR*5}Qp
} 7dV^35 KP
asPD>j c
Lm-}W "7
C++ \ E[0KvN;O
#include <iostream> PCt&66F
8Q#&=]W$
int main() 97F$$d54T
{ iO<O2A.F
std::cout << "Hello, world!" << std::endl; ^h^j:!76j
return 0; +n2x@ 0op
} IGu*#>h
RD{jYr;
=k3QymA
C++/CLI m='+->O*'l
int main() =wS:)%u
{ /R9>\}.yJ
System::Console::WriteLine("Hello, world!"); [h%_` 8z
} {'>X6:
rrbCg(
-W+dsZ Sv8
C# (C Sharp) Srol0D I
class HelloWorldApp mz9Kwxe
{ {D`F$=Dlw
public static void Main() 'DntZK
{ G!0|ocE}
System.Console.WriteLine("Hello, world!"); 8b6:n1<fn
} Pvbw>k;
} RoJ&dK
;#rtV;
`z+:Z>>
COBOL
"thfd"-
IDENTIFICATION DIVISION. szmjp{g0
PROGRAM-ID. HELLO-WORLD. Br-y`s~cP
#cjB <APY
ENVIRONMENT DIVISION. ^9cqT2:t
{Z-5
DATA DIVISION. tC|5;'m.2
M&Ycw XV:Z
PROCEDURE DIVISION. q' _
DISPLAY "Hello, world!". :V+t|@m5l
STOP RUN. `pII-dSC%
hDmVv;M:
F\,3z7s
Common Lisp Y`lC4*g
(format t "Hello world!~%") MzJ5_}
<;v{`@\j{
x6:$lZ(
DOS批处理 "* 'rzd
@echo off w5qhKu!1
echo "Hello, world!" v[F_r
{(xNC#
Ai#W.
n
Eiffel #-e3m/>
class HELLO_WORLD 8&`s wu&
xo^_;(;
creation (Ca\$p7/
make T3M 4r|
feature QI`Z[caF
make is XUW~8P
local n6|}^O7
io:BASIC_IO tb0s+rb
do 9H.E15B
!!io u7a4taM$d
io.put_string("%N Hello, world!") zZ;tSKL
end -- make &yVii^
end -- class HELLO_WORLD ;'=!Fv
K})j5CJ/
{yspNyOx
Erlang Vfc9+T+
-module(hello). {d^&$~
-export([hello_world/0]). 1*>a
.HGEddcC
hello_world() -> io:fwrite("Hello, World!\n"). hQ<"
$9Z8P_^.0(
eDTEy;^o
Forth puMpUY
." Hello, world!" CR ';b/D
(qB$I\
QdDdrR^&
Fortran 8iX?4qj{P
WRITE(*,10) N15{7,
10 FORMAT('Hello, World!') RJBNY;0
STOP C(W?)6?
END IybMO5Mwn
yKfRwO[j
;=UrIA@y;=
HTML W P.6ea7k
<HTML> 4(B,aU>y
<HEAD> 2psI\7UjA]
<TITLE> Hello World! </TITLE> m$[\(Z(/
</HEAD> ih1SN,/
<BODY> =;@5Ue
J
<p>Hello World!</p> Y\ 9uR!0
</BODY> TS=p8@w}
</HTML> 6Y}#vZ
2psLX
,F:l?dfB\I
HQ9+ oVmGZhkA@'
H |y;+xEl6
"d.qmM
! daXF&q
INTERCAL NG S/lKz
PLEASE DO ,1 <- #13 %) q5hB
DO ,1 SUB #1 <- #238 b/O~f8t
DO ,1 SUB #2 <- #112 ;Iv)J|*
DO ,1 SUB #3 <- #112 7i6-Hq
DO ,1 SUB #4 <- #0 UyK|KL
DO ,1 SUB #5 <- #64 R<k4LHDy
DO ,1 SUB #6 <- #238 Oo=}j
DO ,1 SUB #7 <- #26 dc%+f
DO ,1 SUB #8 <- #248 Is?0q@
DO ,1 SUB #9 <- #168 6ng
.
=
DO ,1 SUB #10 <- #24 'SOp!h$
DO ,1 SUB #11 <- #16 ULQ*cW&;?
DO ,1 SUB #12 <- #158 2}509X(*
DO ,1 SUB #13 <- #52 jF-z?
PLEASE READ OUT ,1 5QMu=/
PLEASE GIVE UP dwAju:-H
i:{a-Bd
Y.Gr(]tk
Java $&lS7}
public class Hello h'kgL~+$
{ #^Sd r-
public static void main(String[] args) :ykQ[d`:|
{ +s_@964
System.out.println("Hello, world!"); r 97 VX>
} O]lWaiR`
} Q[8L='E
n*bbmG1
KvktC|~?
JSP m0un=>{
<% 6!b9 6bV
out.print("Hello, world!"); 6,s@>8n
%> \zgRzO'N
gpE5ua&
r=qb[4HiV
MIXAL ,bJZs-P0
TERM EQU 19 the MIX console device number e&]XiV'
ORIG 1000 start address "t4~xs`~X
START OUT MSG(TERM) output data at address MSG xNq&_oY7
HLT halt execution F/@#yQv?
MSG ALF "MIXAL" N:gS]OI*
ALF " HELL" wm@1jLjrQ
ALF "O WOR" WWq)CwR
ALF "LD " 0W]Wu[k
END START end of the program ~Bj-n6 QDE
\?
MuORg
eFZ`0V0
Nuva f9OVylm
<..直接输出..> (:E^} &A
Hello, world! Jq?ai8
Ep?a1&b
<..或者..> qj/ 66ak
Ct"h.rD ]
<. L>pP3[~DV
// 不带换行 ;~/
? "Hello, world!" o+6Y/6Xp@
1VJE+3
// 或者 V-J\!CHX
B.{0,bW?
// 带换行 .hT^7|Jz[
?? 'Hello, world!' }$g5:k!
.> ?^,GaZ^V
<}i\fJX6
ng<|lsZd
OCaml [f-
#pew
let main () = Cn+TcdHX
print_endline "Hello world!";; c;(}Ih(#
I9tdr<
qYbod+UX
Pascal ^#gGA_H
program Hello; \n+`~< i
begin NIV&)`w
writeln('Hello, world!'); 4my8 p Fk
end. KDHR}`
Ur5X~a\y
J,P7k$t2vv
Perl (K0FWTmm
#!/usr/local/bin/perl :/
"qNPJ
print "Hello, world!\n"; ,uDB]
64>Zr
i,b>&V/Y$
PHP ]lm9D@HMC
<?php z2 nDD6N
print("Hello, world!"); F>!fu.Ws
?> >Q"eaJxE!l
kk^KaD4dA
p/SJt0
Pike Q,)G_lO
#!/usr/local/bin/pike Yckl,g_
int main() srg#<oH|{c
{ ~#(bX]+A
write("Hello, world!\n"); mufF_e)
return 0; Z\LW<**b
} #gi&pR'$
W;Fcp
=]etw
PL/I J#'c+\B<2X
Test: procedure options(main); CUY2eQJ{U
declare My_String char(20) varying initialize('Hello, world!'); %Ix^Xb0
put skip list(My_String); 2/(gf[elX
end Test; tPFV6n
i
L(AY)gB
gIRFqEz@o
Prolog TLO-$>h
goal 8G(wYlxi
write("hello,world!"). ;~xkT'
KA%tVBl
5b|_?Em7
Python //|9J(B]
#!/usr/local/bin/python >&BgF*mm
print "Hello, world!" \s+<w3
JnPA; 1@/
bzB9u&
REXX @I_A(cr
say "Hello, world!" Etn]e;z4
!K6: W1
W99Fb+$I
Ruby c69B[Vjb
#!/usr/bin/ruby [Zgy,j\\
print "Hello, world!\n" &5C%5C~ch
g[:5@fI#*
a Se.]_
Scheme vmW4a3
(display "Hello, world!") d+"KXt5CV
(newline) hb^e2@i;Oq
@HaWd3
2u#{K9g
sed (需要至少一行输入) +O9l@X$l=
sed -ne '1s/.*/Hello, world!/p' /m9t2,KB
PvKe|In(
TC J\@|yw
Smalltalk .6
Transcript show: 'Hello, world!' ,!bOzth2>K
iTxn
=:9n+7~$
SNOBOL ;jI\MZ~l\
OUTPUT = "Hello, world!" jS|(g##4
END ilpg()
N[zI@>x
42Ql^ka
SQL $mp7IZE|
create table MESSAGE (TEXT char(15)); Lf7iOW9U3
insert into MESSAGE (TEXT) values ('Hello, world!'); ,]20I _
select TEXT from MESSAGE; PP$Ig2Q
drop table MESSAGE; 1AA(qE
Yo(8mtYU
CbK7="48
Tcl /WMG)#kw'
#!/usr/local/bin/tcl o<T>G{XYB
puts "Hello, world!" dI'C[.zp[
e`8z1r
gY;N>Yq,C
TScript e#&[4 tQF
? "Hello, world!" := *>:*.Kb
zKgW9j<(
LF{ qI?LG
Turing )pJ}o&J
put "Hello, world!" ?MO'WB9+JR
uodO^5"-
1gH5#_?
UNIX-style shell [NaU\;w\
程序中的/bin/sh可改为您使用的shell Gf]oRNP,N
<1_?.gSi
#!/bin/sh $3"0w
echo 'Hello, world!'
Z p]Bs
t_P1a0Zu
28Q`O$=v
GUI 4 #4kfGoT
OM2|c}]ZQ
Delphi y$\K@B4
program HelloWorld; 7B+?1E(
uses h
:NHReMT
Dialogs; A+Z3b:}~
begin $W`
&7
ShowMessage('Hello, World!'); :GGsQ
n
end. |oO0%#1H
bu@Pxz%_
*GD 1[:
Nuva 2NE/ZqREg
<. -cIc&5CS
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) yf_<o
.> =fG(K!AQ
:UFf6T?
w_A-:S
5C
Visual Basic AGrGZ7p]
MsgBox "Hello, world!" F fl`;M
'或者 bFJmXx&
Print "Hello, world!" w)DO"Z7
V<ODt%
o{>hOs
&
Visual FoxPro VO++(G)
? "Hello, world!" zA-?x1th&
vR+(7^Yy
MQR2UK(
X11 VAq(
t
用一个程序 F
\} Kh3
z XVQLz5
xmessage 'Hello, world!' @/|sOF;8W
NP%ll e,l
用C++和gtkmm 2 I+u=H2][2
[-Q"A
6!Zd
#include <iostream> \gIdg:"02
#include <gtkmm/main.h> '90B),c{
#include <gtkmm/button.h> QC ?8
#include <gtkmm/window.h> t@)~{W
{
using namespace std; =X+DC&]%!
?9=yo5M}
class HelloWorld : public Gtk::Window XXe7w3x{
{ rKi)VVkx_
public: !?Ow"i-lp
HelloWorld(); _k6N(c2Nd
virtual ~HelloWorld(); dqd Qt_
protected: B%'Np7
Gtk::Button m_button; zU1rjhv+
virtual void on_button_clicked(); QHtpCNTVb
}; kC LeHH|K
nC>#@*+jK
HelloWorld::HelloWorld() : m_button("Hello, world!") ;O5NZa!.73
{ F!a YK2
set_border_width(10); ~{+J~5!;<H
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); t7)Y@gRy
add(m_button); S :(1=@
m_button.show(); qJISB7F[%O
} hM>xe8yE
vuw1ycy)
HelloWorld::~HelloWorld() {} ?\^u},HnE|
|vEfE{
void HelloWorld::on_button_clicked() paMw88*u
{ *%8,G'"r?
cout << "Hello, world!" << endl; %tQIKjsVaY
} Mc@p~5!M
17};I7
int main (int argc, char *argv[]) G_dia6
{ *OsXjL`f
Gtk::Main kit(argc, argv); O#u)~C?)8
HelloWorld helloworld; ~ RTjcE
Gtk::Main::run(helloworld); @h^5*M
} gdkO|x
hA/FK
8U\ +b?}
Java ncS^NH(&
import java.awt.*; D:.^]o[
import java.awt.event.*; -AcQ_dS
5HOhk"
public class HelloFrame extends Frame ;5 IS58L
{ X>*zA?:
HelloFrame(String title) G. <9K9K
{ C'zMOR6c
super(title); tx5@r;
} gs0,-)
public void paint(Graphics g) :%!SzI?
{ Txp~&a03
super.paint(g); +Pa!pj/< z
java.awt.Insets ins = this.getInsets(); ?]paAP;4
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); Kz^aW
} @?gH3Y_
public static void main(String args []) k^ZUOWmU|
{ cl)MI,/>
HelloFrame fr = new HelloFrame("Hello"); /md`tqI>i<
u6 B (f;
fr.addWindowListener( Zc%S`zK`7
new WindowAdapter() urtcSq&H'
{ CWC*bkd5a
public void windowClosing(WindowEvent e) 9)f1CC]
{ ?w<x_Lo
System.exit( 0 ); S!.xmc\
} m=y6E,
_
} #*Mk@XrV
); y{jv-&!xB
fr.setResizable(true); q)@.f.
fr.setSize(500, 100); R`
X$@iM
fr.setVisible(true); .cu5h
} 9N'$Y*. d<
} CQv
[Od
dB_\,%vAd
]FFU,me2
Java Applet /Ee0S8!Z!1
Java Applet用于HTML文件。 2<