“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。 u<\Sf" fs
4fL>Ou[YuX
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》。 )CH\]>-FO
ckdCd
J
以下是用不同语言写成的Hello World程序的几个例子: dpdp0
Ada HlxgJw~<
with Ada.Text_Io; use Ada.Text_Io; ;x)f;!e+
procedure Hello is pmUC4=&e
begin %Q93n {?
Put_Line ("Hello, world!"); ,=u!hg
end Hello; yBqKldl
>U:.5Tch'V
bT:;^eG"
汇编语言 c~Y g(
KWVl7Kw#e
x86 CPU,DOS,TASM =dQ46@
MODEL SMALL rgv$MnG
IDEAL Wsw/ D
STACK 100H 6
#jpA.;
cW{ Bsr
DATASEG &
@$ D(
HW DB 'Hello, world!$' 1VXn`O?LW
]|Iczg-
CODESEG UN6nh T
MOV AX, @data DS<E:'N
MOV DS, AX x1+ V
MOV DX, OFFSET HW jJkc vC8d
MOV AH, 09H 2G/CN"
INT 21H @oRo6Y<-
MOV AX, 4C00H f2P2wt.$
INT 21H n~yhX%=_Du
END `g'9)Xf4KT
TwZmZE ?!
G{'`L)~3N
x86 CPU,GNU/Linux,NASM NW*$+u%/R
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). R5cpmCs@R
;Enter this into "hello.asm" then type: ];{CNDAL2
;"nasm -f elf hello.asm" K{G\=yJ((
;"ld hello.o -o hello" "V4ru&a
;"./hello" I(Q3YDdb
y $>U[^G[
section .data ;data section declaration 5F5)Bh
msg db 'Hello World!',0AH Dv BRK}'
len equ $-msg ;string length dJ,,yA*
=W'{xG}
section .text ;code section declaration y(6*)~Dh
global _start ;entry point (start of execution) h"$],=
_start: mov edx,len ;string length K"=I,Vr:
mov ecx,msg ;string start /n 1H;~f]
mov ebx,1 ;file handle: stdout =.q8*7UY
mov eax,4 ;sys_write Hc-68]T
int 80h ;kernel system call RZ9chTX/
\avgXndI
mov ebx,0 ;return value 8Dc'"3+6
mov eax,1 ;sys_exit -H](2}
int 80h ;kernel system call md`"zV
2<8JY4]!]
vSG$2g=
x86 CPU,Windows,MASM32 )l"py9STF
.386 o[E|xw
.model flat,stdcall 6,UW5389
option casemap:none UU"'
;Include 文件定义 d{G*1l(X
include windows.inc We*&\e+"T
include user32.inc
*B1%-
includelib user32.lib 0GP\*Y8
include kernel32.inc "jMSF@lr
includelib kernel32.lib k_hs g6Ur.
;数据段 Ij9ezNZT=
.data %[H|3
szCaption db 'A MessageBox!',0 [BzwQ 4
szText db 'Hello,world!',0 YVS~|4hu?i
;代码段 SdQ"S-H
.code rq_0"A
start: [,As;a*o
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK LP-_i}Kq
invoke ExitProcess,NULL /D&7 \3}
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> /r@~"Rx '
end start h;?H4j
1/%g
VB8
`c%{M4bF\
AWK x|`o7.
BEGIN { print "Hello, world!" } BEnIyVU;L
k9vzxZ%s:
Cqc5jx0)
BASIC TW5Pt{X=f
传统版BASIC(例如GWBASIC): N9=1<{Z
kcN#g-0
10 PRINT "Hello, world!" v3/l=e?u
20 END TG@ W:>N(
2UJjYrm
或在提示符输入: )7}f.
Y$&+2w,)H,
?"Hello, world!":END s(MLBV5)w
3}9c0%}F
现代版BASIC(例如Quick BASIC): ( !=^ (Nd
z}&JapJ
Print "Hello, world!" MclW!CmJ
rwSmdJ~
以下的语句在Quick BASIC中同样有效: hk.Zn.6A'
|;k@Zlvc
? "Hello,world!" oZSPdk
a1yGgT a?D
yTwtGo&
BCPL <Gkmk?x`A
GET "LIBHDR" N!iugGL
@_4E^KgF
LET START () BE 7r,h[9~e
$( 0G}]d17ho
WRITES ("Hello, world!*N") 9qXKHro
$) ~rICPR
_m2p>(N|
0` \!O(jJ
Befunge %e|.a)78
"!dlrow olleH">v 0JS#{EDh+
, =LHz[dSL
^_@ ,3~[cE<4
U,2H) {l/
T(2*P5%&
Brainfuck +o[-ED
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ?f'iS#XL
+++++++++++++++.>.+++.------.--------.>+.>.
I("lGY
j8#xNA
Kp)H>~cL
C R-lpsvDDL2
#include <stdio.h> |h(05Kbk
?&rt)/DV,
int main(void) >IFqwh7b
{ : 7Jpt3
printf("Hello, world!\n"); D,sb{N
return 0; k^C^.[?
} VS
?n pH
(HD8Mm
uXkc07 r'
C++ F\IJim-Rh
#include <iostream> (`me}8
xq-TT2}<L
int main() pf[m"t6G~
{ S&Szc0-|k
std::cout << "Hello, world!" << std::endl; Bt[Wh@
return 0; lJIcU
RI4
} _Z{EO|L
P'Diie
8k|&&3_[?
C++/CLI NL}Q3Vv1.
int main() }ofx?s}
{ 5g\>x;cc
System::Console::WriteLine("Hello, world!"); @4xV3Xkf&C
} .bloaeu-
:Cdqj0O3u
J*FUJT
C# (C Sharp) EPu-oE=HW4
class HelloWorldApp y 13Y,cz~B
{ 5[5|_H+0
public static void Main() v_L2>Pa.
{ L=# nnj-
System.Console.WriteLine("Hello, world!"); =
iXHu
*g
} wJMk%N~R:
} }eq*dr1`
X4I+
%=[xc?
COBOL 4Mck/i2
IDENTIFICATION DIVISION. t$zeBOI)
PROGRAM-ID. HELLO-WORLD. c%x9.s<+1
1];OGJuJ2
ENVIRONMENT DIVISION. /(jG9RM
r~q3nIe/,
DATA DIVISION. ^sqTgrG
AJ"a
PROCEDURE DIVISION. %ZbdWHO#
DISPLAY "Hello, world!". ,:=g}i
STOP RUN. *-\qO.4\
3$f+3/l
$rV4JROb
Common Lisp pr?k~Bn
(format t "Hello world!~%") ;]\>jC
$/#F9>eZ
2m{d>
DOS批处理 -50Qy[0. "
@echo off sEzl4I
echo "Hello, world!" Fz.Ij'8.H
Da-U@e!
V ah&)&n
Eiffel -,a@bF:
class HELLO_WORLD 0i3Z7l]
{baG2Fe1`b
creation X`JoXNqm
make wmB_)`QNP
feature Bk2j|7
make is tTE]j-uT
local $eiW2@
io:BASIC_IO yE{\]j|Zf
do OuMj%I
!!io dC(5I{I|
io.put_string("%N Hello, world!") =)YDjd_=z
end -- make FaQz03N\
end -- class HELLO_WORLD z0T9tN!(
E]dc4US
qe2@bG%2+F
Erlang /CXQ&nwY9=
-module(hello). <IO@Qj1*
-export([hello_world/0]). S;iJQS
TD.t)
hello_world() -> io:fwrite("Hello, World!\n"). Dn[u zY6
t>}(`0
VOGx
Forth vww>] Z}
." Hello, world!" CR Zdy{e|-Zn
V~MyX&`
gN;
E}AQt
Fortran q#PMQR"C
WRITE(*,10) :j&- Lc
10 FORMAT('Hello, World!') e4LJ3y&z"
STOP p1!-|Sqq
END e:+[}I)
!uW;Ea?
LZ}m;
HTML ;pt.)5
<HTML> YVLK X}$)(
<HEAD> &fe67#0r)
<TITLE> Hello World! </TITLE> >XPR)&t
</HEAD> ?
J/NYV
<BODY> ok1-`c P
<p>Hello World!</p> !:c_i,N
</BODY> >udu~
</HTML> 7G=Q9^J.H
ijACfl{!:t
+:3s f%0
HQ9+ N{#9gr3zi
H yA~1$sA1
d]vom@iI
y<kg;-& 8
INTERCAL s1bb2R
PLEASE DO ,1 <- #13 uaqV)H
DO ,1 SUB #1 <- #238 w* \JA+
DO ,1 SUB #2 <- #112 2sYz$ZGC"#
DO ,1 SUB #3 <- #112 :u`gjj$:s
DO ,1 SUB #4 <- #0 ,wZq~;2
DO ,1 SUB #5 <- #64 4ufT-&m};s
DO ,1 SUB #6 <- #238 KEjMxOv1
DO ,1 SUB #7 <- #26 {]]#q0|
DO ,1 SUB #8 <- #248 x}~Z[ bx
DO ,1 SUB #9 <- #168 "2ZuI;w
DO ,1 SUB #10 <- #24 L| ]fc9W:
DO ,1 SUB #11 <- #16 2"EaF^?\
DO ,1 SUB #12 <- #158 zmFS]IOv$
DO ,1 SUB #13 <- #52 nT9Hw~f<j
PLEASE READ OUT ,1 L KLLBrm:
PLEASE GIVE UP A"/|h].
/h 4rW>8D2
B&AF(e (
Java MIY`"h0*
public class Hello 9L>73P{_
{ .UYhj8
public static void main(String[] args) =g |5VXW5
{ !NMiWG4R
System.out.println("Hello, world!"); D< 0))r
} VV"w{#XKw
} 1L%$\0B4hm
:cKdl[E4z
{g 4`>^;
JSP pP%9MSCi
<% C8%MKNPd
out.print("Hello, world!"); ,V[|c$
%> 5DJ!:QY!
hcoZ5!LvT
?Kg_bvoR
MIXAL SN]Na<P
TERM EQU 19 the MIX console device number LtGjHB\+
ORIG 1000 start address O-!Q~;3][
START OUT MSG(TERM) output data at address MSG W9;9\k
HLT halt execution X/h|;C*9
MSG ALF "MIXAL" MS\?+8|SV(
ALF " HELL" Ec&_&
ALF "O WOR" Z+ _xX
ALF "LD " Y+eDE:4
END START end of the program |3g'~E?$
%$N,6}n
<Qt9MO`a
Nuva \46*4?pP
<..直接输出..> cNMDI
Hello, world! "A0y&^4B@
Bm;:
cmB0e
<..或者..> 9W&nAr
tBVtIOm9
<. Bm 4$
// 不带换行 3|%058bF
? "Hello, world!" a7aj:.wi
P1R[M|Fx
// 或者 yp)D"w4@
h)^|VM
// 带换行 zU'7x U-
?? 'Hello, world!' Y]!&, e,
.> +Jm[IN
pTT00`R
N~P1^x~
OCaml :q~5Xw/
let main () = VAA="yN
print_endline "Hello world!";; Rm`P.;%
TW}].A_-
^fE8|/]nG9
Pascal IY|`$sHb
program Hello; ;]k\F
begin tJ
.Ln
writeln('Hello, world!'); Z29LtKr
end. ! F<::fN
7g:Lj,Z4L
-@@
O<M^
Perl 53>(2 _/[r
#!/usr/local/bin/perl s1t kiX{>
print "Hello, world!\n"; ^$]iUb{\
Gd$!xN%O
/x<uv_"
PHP F$i 6
<?php 39I|.B"
print("Hello, world!"); <
<F
?> 7=s0Pm
#CcEI
r;p@T8k
Pike o#WECs>
#!/usr/local/bin/pike M(I%QD
int main() gf}*}8D
{ ;@
G ^eQ
write("Hello, world!\n"); egH,7f(yP
return 0; B>c2 *+Bk
} Q(O0z3 b
+VL:O]`DJ
)l.AsfW%
PL/I ia,5=SKJ
Test: procedure options(main); U;0:@.q
declare My_String char(20) varying initialize('Hello, world!'); D5:|CMQ
put skip list(My_String); DK20}&RQ
end Test; :4)(Qa(
n5)ml)m
""Oir!4
Prolog ,5j3(Lk
goal Q
pIec\a+
write("hello,world!").
+hX=
:yTr:FoF
;-_ZWk]
Python %gWQ}QF
#!/usr/local/bin/python ~NLthZ(O
print "Hello, world!" ?zfm"o
KK{_s=t%<
lM#,i\8Q
REXX o ZQ@ Yu3
say "Hello, world!" ym_as8A*Q
aX*9T8H/
@pH6FXVGzt
Ruby ]z#)XW3#i
#!/usr/bin/ruby =)Fb&h]G^
print "Hello, world!\n" 5z\,]
5>UQ 3hWo
%Y"pVBc
Scheme ?uU_N$x
(display "Hello, world!") $zF%F.rln
(newline) r4<As` &
!b&+2y2i[W
,*YmXR-"
sed (需要至少一行输入) 5z2("[8L&
sed -ne '1s/.*/Hello, world!/p' Bsha)<
@/:7G.
/t! 5||G
Smalltalk An^)K
Transcript show: 'Hello, world!' qM6hE.J
HXC\``E
[lVfhXc&
SNOBOL TY5R=jh=
OUTPUT = "Hello, world!" *e<}hmDr
END mSvSdKKKlI
sKJr34
$ M/1pZ
SQL 8nL9#b
create table MESSAGE (TEXT char(15)); lrL:G[rt
insert into MESSAGE (TEXT) values ('Hello, world!'); Dr[;\/|#
select TEXT from MESSAGE; #Ma:Av/
)
drop table MESSAGE; fK *l?Hr
s:_a.4&Y
g$zGiqzMK
Tcl NHe)$%a=H
#!/usr/local/bin/tcl byMy-v;
puts "Hello, world!" iOSt=-p
&[
],rT
b)M-q{
TScript B}. :7,/0
? "Hello, world!" nK)1.KVN
TU58
gK@`0/k{
Turing !3\$XK]5ZT
put "Hello, world!" 9Kgyt
*SIYZE'
Vh2uzG
UNIX-style shell x*RSD,3
程序中的/bin/sh可改为您使用的shell t;/uRN*.
<m\<yZ2aa
#!/bin/sh mBb3Ta
echo 'Hello, world!' iH@u3[w
ngmC~l*,
d:>'c=y
GUI uK`gveY
MkjB4:"
Delphi "'@D\e}
program HelloWorld; N~fE&@-
uses ULBEe@s
Dialogs; jT< I`K*
begin fR~0Fy Gp
ShowMessage('Hello, World!'); |K;9b-\
end. IR$d?\O3
N)Q.P'`N
g5"I{ol5T~
Nuva aG#d41O
<. VzIZT{
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) HY1K(T
.> 1]5k lJ
%<+uJ'pj
7R
m\#
Visual Basic NZ&ZK@h}.
MsgBox "Hello, world!" ao=e{R)
'或者 mqHH1}
Print "Hello, world!" WVhQ?2@ }
!Ur.b
@ke
BD;T>M
Visual FoxPro cWZ uph\
? "Hello, world!" K*2s-,b *
Eb@**%
esE!i0%
X11 kX`m(
N$
用一个程序 N*6~$zl&
o|vL:| 8Q
xmessage 'Hello, world!' .-![ ra
],[<^=|
用C++和gtkmm 2 ,
V,Q(!$F
upk+L^
#include <iostream> FN<>L0
#include <gtkmm/main.h> /W-ges
#include <gtkmm/button.h> YVvE>1z
#include <gtkmm/window.h> Yy 0" G
using namespace std; s$qc&
q
:~/2<o
class HelloWorld : public Gtk::Window je2"D7D
{ 7FyE?
public: GnUD<P=I
HelloWorld(); [KHlApL
virtual ~HelloWorld(); s]6;*mI2
protected: Y?7GFkIP$
Gtk::Button m_button; ~av#r=x
virtual void on_button_clicked(); jO5R ~O`
}; l0URJRK{*
4X7J~
HelloWorld::HelloWorld() : m_button("Hello, world!") a#i|)[
{ ,!alNNY
set_border_width(10); NqD Hrx
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); zv0sz])
add(m_button); ~@PD\
m_button.show(); [7HBn
} 1 I.P7_/
~Ey+
HelloWorld::~HelloWorld() {} `''y,{Fs
}uC]o@/
void HelloWorld::on_button_clicked() 3.hFYA w
{ ^BRqsVw9
cout << "Hello, world!" << endl; q+oc^FD?@
} 8!!h6dQgI
42tZBz&
int main (int argc, char *argv[]) vqQ)Pu?T
{ rC!"<