“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。 P15
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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》。 cnv>&6a)
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以下是用不同语言写成的Hello World程序的几个例子: :GHv3hn5
Ada \o9 \ikR
with Ada.Text_Io; use Ada.Text_Io; L4#pMc
procedure Hello is ZCiCZ)oc
begin o2 14V \
Put_Line ("Hello, world!"); I=Y>z^4
end Hello; (i1JRn-f
vvoxK 0
&d# R'Z
汇编语言 8.E"[QktZ
gYpMwC{*d
x86 CPU,DOS,TASM wp[Ug2;G
MODEL SMALL $pGT1oF[E
IDEAL f:T?oR>2
STACK 100H :2 ;Jo^6Se
?1e{\XW
DATASEG ;JW_4;-
HW DB 'Hello, world!$' .])prp8
NFK`,
CODESEG eI
#Gx_mg
MOV AX, @data APQq F/
MOV DS, AX =OVDJ0ozZ
MOV DX, OFFSET HW 8)i""OD@I
MOV AH, 09H sV^:u^
INT 21H ']]d-~:
MOV AX, 4C00H r~w.J+W
INT 21H s\ IKSoE
END JzHG5nmB
NW3c_]`=
4zug9kFK
x86 CPU,GNU/Linux,NASM my=f}%k=
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). RaZ>.5
D
;Enter this into "hello.asm" then type: 2ZH+fV?.
;"nasm -f elf hello.asm" Cs,H#L
;"ld hello.o -o hello"
Ucj?$=
;"./hello" ZykMri3bi
nQ%HtXt;
section .data ;data section declaration vW63j't_
msg db 'Hello World!',0AH {h<D/:^v
len equ $-msg ;string length @[$_cGR7
yU$MB,1
section .text ;code section declaration vdQoJWuB
global _start ;entry point (start of execution) S}m_XR]
_start: mov edx,len ;string length OMGggg
mov ecx,msg ;string start G=dzP}B'WA
mov ebx,1 ;file handle: stdout 5En6f`nR{
mov eax,4 ;sys_write 0}{xH
int 80h ;kernel system call _;<!8e$C
*Ak .KBg
mov ebx,0 ;return value f0<zK!
mov eax,1 ;sys_exit md!6@)S-p
int 80h ;kernel system call 1GY2aZ@
boh?Xt-$
a"8[,A3
x86 CPU,Windows,MASM32 s6H'}[E<
.386 95DEuReKi
.model flat,stdcall ZedFhm
option casemap:none 8HF^^Cva
;Include 文件定义 xU
*:a[g
include windows.inc L'e_?`!:
include user32.inc 8fR(y~_gF
includelib user32.lib K*6 "c.D
include kernel32.inc k[=qx{Osx%
includelib kernel32.lib 0lw>mxN
;数据段 ~%{2Z_t$
.data PnsBDf%v
szCaption db 'A MessageBox!',0 XtF
m5\U
szText db 'Hello,world!',0 GK?ual1
;代码段 b7Y g~Lw
.code 74s{b]jN'-
start: @hLkU4S
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Cs $5Of(
invoke ExitProcess,NULL {]vD@)k
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >1y6DC
end start jDzQw>TX
1Pf(.&/9_
xNz(LZ.c
AWK #-hO\
QdC
BEGIN { print "Hello, world!" } *kr/,_K
>rG>Bz^Pu
LQ0/oYmNc
BASIC yNu_>!Cp5
传统版BASIC(例如GWBASIC): {.Tx70kn
^l &lwSRVt
10 PRINT "Hello, world!" 6(
HF)z
20 END [P$Xr6#
UA[`{rf
或在提示符输入: %>_[b,
,'#TdLe
?"Hello, world!":END qsj{0 Go
A~ya{^}
现代版BASIC(例如Quick BASIC): sXKkZ+2q
k.T=&0J_1
Print "Hello, world!" LZ*8YNp1'
-@TY8#O#-
以下的语句在Quick BASIC中同样有效: 8\"<t/_
W
ZbnAAbfKH
? "Hello,world!" f%Q)_F[0D4
+`y(S}Z
+9)JtmoL
BCPL ]5!3|UYS
GET "LIBHDR" /-=fWtA
lFBdiIw
LET START () BE Aq i:h]x
$( m0HK1'
WRITES ("Hello, world!*N") ~ELY$G.xl
$) =w2 4(S
PK*Wu<<
\0$+*ejz
Befunge Q PH=`s
"!dlrow olleH">v [g}Cve#i
, _0H oJ
^_@ 0zt]DCdY
b UG,~\Z
0.GFg${v`
Brainfuck z2=bbm:
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< V>6klA}o
+++++++++++++++.>.+++.------.--------.>+.>. $ {yct
=bKDD<(
R|;BO:S1
C -Cf)`/
#include <stdio.h> }$6L]
oOFTQB_6
int main(void) nep#L>LP$x
{ ttP7-y
printf("Hello, world!\n"); gt kV=V
return 0; ^W |YE72Y
} kUT2/3Vi
X2w)J?pv
X+vKY
C++ I8H3*DE
#include <iostream> ^z,3#gK
uU
d"l,V
int main() dwj?;
{ |k a _Zy
std::cout << "Hello, world!" << std::endl; $H:!3-/
return 0; Szo'[/
[R
} xATx2*@X2
2D\pt
LIg1U
C++/CLI <o EAy
int main() FW]tDGJOw
{ yi7.9/;a
System::Console::WriteLine("Hello, world!"); q'D Ts9Bj
} `[ZswLE
U%3N=M
6v%yU3l
C# (C Sharp) ^F^g(|(K
class HelloWorldApp |r9<aVlK
{ LI,wSTVjC
public static void Main() ~Xi@#s~
{ @@d_F<Ym[
System.Console.WriteLine("Hello, world!"); Rv1W &s&
}
Y@,iDQ
} NAYLlW}A
*V>?m6y/
7FX4|]
COBOL Pz)lq2Zm9
IDENTIFICATION DIVISION. h nydH-;cz
PROGRAM-ID. HELLO-WORLD. @]uqC~a^
g*k)ws
ENVIRONMENT DIVISION. [ATJ!
O
/t5)&
DATA DIVISION. J[/WBVFDf
OB>Hiy
PROCEDURE DIVISION. z} fpV T
DISPLAY "Hello, world!". AD?zBg Zu
STOP RUN. O'4G'H)
|)x7qy`
Ek+R
Common Lisp s$Vl">9#
(format t "Hello world!~%") y-<.l=6A
Nd8>p.iqO
CKAd\L
DOS批处理 8/e-?2l
@echo off EQ%o oAb8
echo "Hello, world!" <G})$f'x2
]b-2:M
=v2|QuS$
Eiffel ;lObqs*?>
class HELLO_WORLD 2|pTw5z~
-wU]L5uP
creation ;m7V]h? R
make >$q
feature :a wt7lqv
make is 4v[y^P
local ZTmy} @l
io:BASIC_IO s'HsLe0|
do @9/I^Zk
!!io PV68d; $:8
io.put_string("%N Hello, world!") .}faWzRH9
end -- make x0 j5D
end -- class HELLO_WORLD P&`%VW3E
N'{[BA(eE
Ejug2q
Erlang =\Q<TY
-module(hello). *-0s
`rC
-export([hello_world/0]). 9qx4F<
Q2
q~m8(
hello_world() -> io:fwrite("Hello, World!\n"). e5_Hmuk|
4`O[U#?
w>W #cTt
Forth 20Zxv!
." Hello, world!" CR <AgB"y@
M}]
*j
Ow0>qzTg
Fortran SxF'2ii
WRITE(*,10) aH}/+Hu-
10 FORMAT('Hello, World!') $6Ma{r C|
STOP qbyYNlXqm
END \'|n.1Fr
Jr!^9i2j'
{-A|f
HTML $dM_uSt
<HTML> i{$-[*WHiV
<HEAD> Vh-8pFt
<TITLE> Hello World! </TITLE> K0w}l" )A
</HEAD> =O}I{dNKZV
<BODY> ^0]0ss;##R
<p>Hello World!</p> `gSMb
UgF
</BODY> }rQ Qe:{]B
</HTML> 8D.c."q
5CK+\MK
A f'&, 1=q
HQ9+ ~5
6&!4
H )>@S8v,(
]_C"A
Pe`mZCd^
INTERCAL ?%3dgQB'
PLEASE DO ,1 <- #13 ; Z:[LJd
DO ,1 SUB #1 <- #238 @i ~ A7L0/
DO ,1 SUB #2 <- #112 +4yre^gC
DO ,1 SUB #3 <- #112 ~z^?+MgZ2
DO ,1 SUB #4 <- #0 .xIAep_
DO ,1 SUB #5 <- #64 nJI2IPZ
DO ,1 SUB #6 <- #238 8AR8u!;8
DO ,1 SUB #7 <- #26 1!uBzO6/$
DO ,1 SUB #8 <- #248 (xgw';g
DO ,1 SUB #9 <- #168 ?]><#[?'L
DO ,1 SUB #10 <- #24 ]>M\|,wh
DO ,1 SUB #11 <- #16 E&9<JS
DO ,1 SUB #12 <- #158 nDnJ}`k
DO ,1 SUB #13 <- #52 luP;P&
PLEASE READ OUT ,1 uV:R3#^
PLEASE GIVE UP
wra0bS)4
k4Q>J,k
HV%/baX]
Java xPZ>vCg
public class Hello {aAd (~YZ
{ *}2L4]
public static void main(String[] args) X]y:uD{
{ b8d0]YS
System.out.println("Hello, world!"); q,Gymh;
} <7P[)X_
} b8K]>yDAh
^J]&($-
`W86]ut[
JSP :
UeK0
<% s)Y1%#
out.print("Hello, world!"); {Zgd
%> [IAUJ09>I
$w(RJ/
?R]`M_^&u!
MIXAL 9a*#r;R
TERM EQU 19 the MIX console device number ^kfqw0!
ORIG 1000 start address 5W)ST&YPL*
START OUT MSG(TERM) output data at address MSG Kk^*#vR
HLT halt execution 5G355 ,}E
MSG ALF "MIXAL" biHacm
ALF " HELL" gqS9 {K(f
ALF "O WOR" 1.14tS-}[4
ALF "LD " ^QNc!{`
END START end of the program s4bV0k
` <1Wf
i"&FW&W
Nuva <Yki8
<..直接输出..> 4Ly>x>b<
Hello, world! vAX ( 3
uZ6krI
<..或者..> C8K2F5c5
_mSefPl
<. 1(DiV#epG
// 不带换行
GK/Po51
? "Hello, world!" @1CXc"IgA
C*mVM!D);!
// 或者 *}\M!u{J
u"h/ERCa
// 带换行 }JFTe
g
?? 'Hello, world!' %o8o~B|{.U
.> 6x^$W ]R
=TD`P et
Z:9 Q~}x8
OCaml {R_>KE1
let main () = TAXsL&Tz>
print_endline "Hello world!";; 6+$2rS$1V
-;9
}P
J+/}m}bx
Pascal Y(Oh7VwY*P
program Hello; lp}S'^ y
begin #,tT`{u1q
writeln('Hello, world!'); N,TV?Q5l7
end. R!dC20IMvH
ZA="Dac
8e?/LA%MU
Perl 9rEBq&
#!/usr/local/bin/perl 6U{A6hH]
print "Hello, world!\n"; T#B#q1/
dJR[9T_OF
sqKx?r72
PHP vIpL8B86a
<?php VKttJok1
print("Hello, world!"); m?(8T|i
?> [rx9gOOa&
f=^xU
P
NifQsy)*%
Pike <IR#W$[
#!/usr/local/bin/pike e(7#>O%1
int main() ~A>fB2.pM
{ yz68g?"
write("Hello, world!\n"); j4IVIj@$`
return 0; =e6pv#
} -$8ew+
vh\i ^
Ic(qA{SM
PL/I `O6#-<>
Test: procedure options(main); F;Q,cg M
declare My_String char(20) varying initialize('Hello, world!'); s!(R
put skip list(My_String); L3{(Bu
end Test; 2Wzx1_D"a
HTh?&u\QG
[|:{qQyD
Prolog zyS8LZ-y9
goal uZ?P{E,K
write("hello,world!"). vx9!KWy}
4AJ] qu
JX0M3|I=
Python dWd%>9}
#!/usr/local/bin/python S1$^ _S
=
print "Hello, world!" +@ChZ
%"`p&aE:
jt}Re,
REXX 7.29'
say "Hello, world!" FQ>$Ps*a[
]ogifnwv
$5pCfW8>
Ruby ZO/e!yju
#!/usr/bin/ruby r(r(&NU
print "Hello, world!\n" 7 z
8C{&i5kj\E
UPH#~D!
Scheme ins(RWO
(display "Hello, world!") _%Z.Re
(newline) 5az%yS
KSs1EmB
rf0Z5.
sed (需要至少一行输入) d7^
`
sed -ne '1s/.*/Hello, world!/p' v_zt$bf{Y
q=3>ij{v
`ArUoYbB
Smalltalk ;VLDXvGd
Transcript show: 'Hello, world!' v\@qMaPY
5[;[ Te9=S
Lip#uuuXXN
SNOBOL Ii+3yE@c
OUTPUT = "Hello, world!" $U[d#:]
END 2 `AdNt,
I<2`wL=
?J2{6,}O*.
SQL Xy(QK2|
create table MESSAGE (TEXT char(15)); c=u+X`
Q
insert into MESSAGE (TEXT) values ('Hello, world!'); 4$R!)
select TEXT from MESSAGE; [#GBn0BG)
drop table MESSAGE; |!(8c>]Bo
l`\L@~l n
d.f0OhQ
Tcl <PSz`)SN
#!/usr/local/bin/tcl Lc~m`=B
puts "Hello, world!" x/<ow4C
mW{;$@PLF"
N[
=I
TScript w"0$cL3
? "Hello, world!" br=e+]C Y)
!sX$?P%U
jnqp"
Ult>
Turing LGL;3EI
put "Hello, world!" q]{gAGe~
<~mqb=qA$
@_`r*Tb)dM
UNIX-style shell "[ LUv5
程序中的/bin/sh可改为您使用的shell 1te^dh:Vp
~ n<|f
#!/bin/sh _-f LD
echo 'Hello, world!' a>GA=r
3.YH7rN
| +;ZC y
GUI DG;u_6;JR
:kHk'.V1(
Delphi lH3.q4D
5
program HelloWorld; -=lm`X<:
uses `&NFl'l1C
Dialogs; v.W!
begin "5eD
>!
ShowMessage('Hello, World!'); lB27Z}
end. oI-Fr0!
W_XFTqp^
(m1m}* @
Nuva |Kd6.Mx
<. @ fMlbJq
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) vE9"1M
.> b#I,Z+0ry
'\{ OQH
4AhFE@
Visual Basic aKMX-?%t4
MsgBox "Hello, world!" `G ":y[Q
'或者 \zJ^XpC
Print "Hello, world!" :(enaHn#~
.U(6])%;@
iY>xx~V
Visual FoxPro
#4|RaI|.
? "Hello, world!" wp:$Tq a$
8TYh&n=r
eQQVfEvS
X11 87[o^) 8
用一个程序 w'}s'gGE
TJNE2
xmessage 'Hello, world!' wSjy31
ZS:[ZehF
用C++和gtkmm 2 S*}GW-)oA
=3,<(F5Y[
#include <iostream> cY} jPDH
#include <gtkmm/main.h> t>]W+Lx#
#include <gtkmm/button.h> K/(LF}
#include <gtkmm/window.h> 1%M^MT%&
using namespace std; leHKBu'd
IO#)r[JZ
class HelloWorld : public Gtk::Window {$ N\@q@v~
{ TPb&";4ROf
public: a?Om;-i2`S
HelloWorld(); ip'v<%,Q3"
virtual ~HelloWorld(); -T+yS BO_3
protected: J>dj]1I
Gtk::Button m_button; e77s?WxbK
virtual void on_button_clicked(); AkjoD7.*
}; h1>.w
pr
,=!s;+lu{
HelloWorld::HelloWorld() : m_button("Hello, world!") ZHen:
{ :8n?G
set_border_width(10); CWs;1`aP
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); yq3"VFh3d
add(m_button); ?_pd#W=!
m_button.show(); ,S(_YS^m
} mp3 Dc
7TAoWD3
HelloWorld::~HelloWorld() {} a
w~a/T:
WV}pE~
void HelloWorld::on_button_clicked() ;$a|4_U$m
{ l$BKE{rg
cout << "Hello, world!" << endl; 3!;o\bgK
} )P1NX"A
^umHuAAE
int main (int argc, char *argv[]) Ahd{f!
{ M]\"]H?
Gtk::Main kit(argc, argv); oQyMs> g
HelloWorld helloworld; T5~Qfl?Y
Gtk::Main::run(helloworld); #oGvxc7
} -NG9?sI\U
=L$RY2S"
"z.!h(Eq
Java y^p%/p%
import java.awt.*; :\#]uDT2=
import java.awt.event.*; VyU!r*
o
r'}#usB(
public class HelloFrame extends Frame \@2sI
{ }xrrHp
HelloFrame(String title) k!@/|]3z
{ g2
V $
super(title); :Z
]E:f0P
} n O}x,sG2'
public void paint(Graphics g) jM@@N.
{ AMgvk`<f
super.paint(g); "2"*3R<Y
java.awt.Insets ins = this.getInsets(); )fZ5.W8UE]
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); gvZLW!={
} qfY=!|O
public static void main(String args []) /|e"0;{
{ ;LT#/t)}<
HelloFrame fr = new HelloFrame("Hello"); MD:kfPQ
G[yN*C
fr.addWindowListener( Dc>)j s|"
new WindowAdapter() 6a`_i
{ kLY9#p=X
public void windowClosing(WindowEvent e) \t&6$"n(B6
{ I|[aa$G
System.exit( 0 ); P3XP=G`E
} ( Gxv?\
} D+_PyK~jc
); X 'bp?m
fr.setResizable(true); }Lwj~{
fr.setSize(500, 100); B<'V7#L_
fr.setVisible(true); H+2J.&Ch
} HNoh B4vt
} 7]9s_13]
-ap;Ul?
OEGAwP?F
Java Applet oB Bdk@
Java Applet用于HTML文件。 5p{tt;9[
f{Y|FjPp=E
HTML代码: cl7+DAE
l 0b=;^6
<HTML> >|I3h5\M
<HEAD> L@R%*-a
<TITLE>Hello World</TITLE> <