“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。 7/;Xt&
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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》。 K/ q:aMq
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以下是用不同语言写成的Hello World程序的几个例子: 13]sZ([B%|
Ada )>)_>[
with Ada.Text_Io; use Ada.Text_Io; K%<Z"2!+
procedure Hello is <!\J([NM8
begin <R:KR(bT
Put_Line ("Hello, world!"); T8.@}a
end Hello; $4V ~hI4
dG|srgk+
!U$ %Jz
汇编语言 ~9qDmt,i
_4z>I/R>Z
x86 CPU,DOS,TASM K<b -|t9f
MODEL SMALL zxCxGT\;
IDEAL yZ aQ{]"
STACK 100H x3L3K/qMg
$-VW)~Sl
DATASEG SvH=P!`+
HW DB 'Hello, world!$' l_LfV ON
AA}M"8~2
CODESEG %@U<|9 %ua
MOV AX, @data \Z^K=K(|
MOV DS, AX kImGSIJ
MOV DX, OFFSET HW {M]m cRB(
MOV AH, 09H l\5}\9yS
INT 21H 8zz-jkR
MOV AX, 4C00H 0Bn$C,-
INT 21H _OT kv6;4n
END W K#lE&V3
|B4dFI?
/Mf45U<
x86 CPU,GNU/Linux,NASM LiJ;A*
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). io:?JnQSA
;Enter this into "hello.asm" then type: il-v>GJU7{
;"nasm -f elf hello.asm" T7n;Bf
;"ld hello.o -o hello" K/Axojo
;"./hello" ;W#G<M&n'
x>5#@SX
J
section .data ;data section declaration Hux#v>e
msg db 'Hello World!',0AH Tk/K7h^
len equ $-msg ;string length bt#=p7W
>k^=+
section .text ;code section declaration )zt*am;
global _start ;entry point (start of execution) 52*zX 3
_start: mov edx,len ;string length 8(%iYs$
mov ecx,msg ;string start <?Fgm1=o
mov ebx,1 ;file handle: stdout v}-'L#6
mov eax,4 ;sys_write ;4XX8W1
int 80h ;kernel system call }?>30+42:
}(J6zo9(x
mov ebx,0 ;return value 1S\q\kz->D
mov eax,1 ;sys_exit yA(H=L-=!1
int 80h ;kernel system call f&^K>Jt1@#
&nj@t>5Bs$
$|z8WCJ
x86 CPU,Windows,MASM32 Kd;|Z
.386 qX:54$t
.model flat,stdcall g<KBsz!{
option casemap:none +S|y)W8
;Include 文件定义 E](Ood
include windows.inc p=9G)VO
include user32.inc 1h]Dc(Oc#=
includelib user32.lib "xS",6Sy
include kernel32.inc \I#2Mq?
includelib kernel32.lib LtH;#Q
;数据段 XXmtpM8
.data Aye!@RjM8
szCaption db 'A MessageBox!',0 ^`=Z=C$fj
szText db 'Hello,world!',0 G?=X!up(
;代码段 H@__%KBw
.code +t/VF(!
start: rtf>\j+
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK `EU=u_N
invoke ExitProcess,NULL WABq6q!
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Z\i@Qa +r
end start 0?SdAF[:z
ctdV4%^{
SLz^Wg._
AWK *8js{G0h
BEGIN { print "Hello, world!" } 62%.ddM4
6E@r9U
|/ZpZ7
BASIC l[Ng8[R
传统版BASIC(例如GWBASIC): ;{BELv-4
2={`g/WeE
10 PRINT "Hello, world!" u;~/B[
20 END sEe^:aSN
wp.<}=|u
或在提示符输入: $>5|TG
0i
/ $WEO[o
?"Hello, world!":END XkuNLs4
im%'S6_X4
现代版BASIC(例如Quick BASIC): ?KI_>{
6/s#'#jh
Print "Hello, world!" R S;r
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以下的语句在Quick BASIC中同样有效: aQ]C`9k
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? "Hello,world!" sqJ?dIBH
*'PG@S
E;D9S
BCPL e][U ;
GET "LIBHDR" : B$
d
GJ
ZT~
LET START () BE QF'N8Kla
$( [P)HVFy|l
WRITES ("Hello, world!*N") (tx6U.Oy
$) id&;
[)#,~L3
J'b*^K
Befunge CdatN$/*
"!dlrow olleH">v &'c1"%*%8>
, >UZfi u
^_@ m}Kn!21
5RI"gf
<.s[x~b\`
Brainfuck vDv:3qN7(
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< a0CmCv2#
+++++++++++++++.>.+++.------.--------.>+.>. 2^Q)~sSf9
DP &,jU6
!m'lOz
C t_x\&+W
#include <stdio.h> )g9Zw_3
P8).Qn
int main(void) Kt;h'?
{ FJp~8
x=
printf("Hello, world!\n"); d*3k]Ie%5f
return 0; 3iR;(l}
} \;.\g6zX
+P6q
wh\v
t]2~aK<]
C++ 4}!riWR
#include <iostream> tO)mKN+
(
2^E.sf$f
int main() )(_}60
{ x =5k74
std::cout << "Hello, world!" << std::endl; j0Kj>
return 0; AWi~qzTZ
} \=XAl >}\
t(/e~w
+I;b,p
C++/CLI 8uchp
int main() xCEEv5(5
{ i~M CY.F
System::Console::WriteLine("Hello, world!"); !WR(H&uBr\
} 0.~QA+BD:S
r-9P&*1
uv/I`[@HK8
C# (C Sharp) F(Pe@ #)A
class HelloWorldApp Jj8z ~3XnJ
{ imZi7o
public static void Main() 3uZY.H+H
{ ^j0Mu.+_
System.Console.WriteLine("Hello, world!"); V&eti2&zO
} UMma|9l(i
} /![S 3Ol
*rXESw]BR
R/Mwq#xUb
COBOL 0gL]^_+7
IDENTIFICATION DIVISION. x$[<<@F%
PROGRAM-ID. HELLO-WORLD. z+@aQ@75
\&NpVH,-
ENVIRONMENT DIVISION. \rF6"24t6
(vB aem9
DATA DIVISION. q?nXhUD
o
)G'._
PROCEDURE DIVISION. kn^RS1m
DISPLAY "Hello, world!". 1y2D]h /'
STOP RUN. J{
P<^<m_
k?;A#L~
JN .\{ Y
Common Lisp /!=uM.
(format t "Hello world!~%") TUw^KSa
u}\F9~W-{
o8-BTq8
DOS批处理 ] QGYEjW
@echo off wc*5s7_
echo "Hello, world!" 6iVjAxR
'_lyoVP
' Ph
Eiffel 5bYU(]
class HELLO_WORLD &=Gz[1
L
jrbEJ.
creation W2D^%;mw
make CC0@RU
feature 5|my}.TR
make is J;W(}"cFq
local x%pC.0%
io:BASIC_IO g{.>nE^Sc5
do :!Wijdq
!!io I?YTX
io.put_string("%N Hello, world!") ZR.1SA0x?O
end -- make [^EU'lewnW
end -- class HELLO_WORLD w,bILv)
/;-KWu+5=
|NJe4lw+?
Erlang iS&~oj_-%
-module(hello). jV]'/X<
-export([hello_world/0]). ZM K"3c9
^1s!OT Is
hello_world() -> io:fwrite("Hello, World!\n"). #s$b\"4
1P#bR`I
>
1L]7*NJe
Forth WPygmti}Be
." Hello, world!" CR G~1#kg
nd3=\.(P
g0v},n
Fortran rlT[tOVAY
WRITE(*,10) XSyCT0f08
10 FORMAT('Hello, World!') lhw]?\
STOP Fq!12/Nn
END F1JSf&8
9yH95uaDF
#~3x^4Y
HTML MlgE-Lm
<HTML> M>D 3NY[,
<HEAD> |RDmY!9&
<TITLE> Hello World! </TITLE> $/90('D
</HEAD> f#_ XR
<BODY> +-&N<U
<p>Hello World!</p>
F' s($n
</BODY> qR4('
</HTML> _IuEa\>
bN$`&fC0
)67_yHW
HQ9+ jCDZ$W89
H _QbLg"O
mr6/d1af_
;>QED
INTERCAL Rq gH,AN
PLEASE DO ,1 <- #13 |:$D[=
DO ,1 SUB #1 <- #238 VgtWT`F.I
DO ,1 SUB #2 <- #112 1@q~(1-o
DO ,1 SUB #3 <- #112 vDZhoD=VR
DO ,1 SUB #4 <- #0 R$'4 d
DO ,1 SUB #5 <- #64 %lNv?sWb
DO ,1 SUB #6 <- #238 _I8L#4\(=
DO ,1 SUB #7 <- #26 W7>4-gk
DO ,1 SUB #8 <- #248 5tT-[mQ*
DO ,1 SUB #9 <- #168 agQzA/Xt
DO ,1 SUB #10 <- #24 G;_QE<V~_
DO ,1 SUB #11 <- #16 iwWy]V m7
DO ,1 SUB #12 <- #158 |-4C[5rM
DO ,1 SUB #13 <- #52 A"x1MjuqLM
PLEASE READ OUT ,1 gvvl3`S{
PLEASE GIVE UP ^wPKqu)^
lwYk`'
oEbgyT gB
Java oJe9H <
public class Hello P1;T-.X~&
{ 0* <gGC
public static void main(String[] args) L@2%a'
{ #c@Dn.W
System.out.println("Hello, world!"); \?c0XD
} ^8$CpAK]M
} ]y3V^W#
Ni*f1[sI<
o"~ODN"L
JSP Y$b4Ga9j
<% XIh2Y\33ys
out.print("Hello, world!"); `<kHNcm
%> OLUQjvnU
,oX48Wg_+
+]uW|owxo
MIXAL x- kCNy
TERM EQU 19 the MIX console device number x7K
ORIG 1000 start address ot]eaad
START OUT MSG(TERM) output data at address MSG {[G2{ijRz
HLT halt execution s|rlpd4y
MSG ALF "MIXAL" (__=*ew
ALF " HELL" 4)BZ%1+
ALF "O WOR" bhe~ekb
ALF "LD " D.Rk{0se8
END START end of the program .NcoST9a
wLC!vX.S
wH=
Nuva r`XIn#o
<..直接输出..> \s?OvqI:
Hello, world! V2sWcV?
;ZXP*M9
<..或者..> tW 53&q\=
_=E))Kp{z
<. 6eE%x?#
// 不带换行 g\)+
LX
? "Hello, world!" \}xK$$f2,
2K<rK(
// 或者 i)f3\?,,
Cj%SW <v|
// 带换行 B3K!>lz
?? 'Hello, world!' S>}jsP:V
.> 26JP<&%L
3xef>Xv=
n={}='
OCaml \kcJF'JFA0
let main () = Jfa=#`
print_endline "Hello world!";; 2
P+RfE`o
BT;hW7){9
rHPda?&H
Pascal E@TX>M-&
program Hello; O-Hu:KuIf
begin I\DmVc\l
writeln('Hello, world!'); eO;i1 >
end. y[[f?rxz>
'EU{%\qM
Z
l.}=
Perl DLcfOOn1I
#!/usr/local/bin/perl kf\n
print "Hello, world!\n"; wVkms
IK5FSN]s/
w]]`/`
PHP d=V4,:=S
<?php )~xL_yW_X
print("Hello, world!"); IF~i*
?> yLCqlK
TEz)d=
jb1OcI%
Pike A]R7H1
#!/usr/local/bin/pike '`?\CXX
int main() /tRzb8`
{ n4\6\0jq6
write("Hello, world!\n"); !Sr^4R +Z
return 0; "
]
0ER
} 9+@"DuYc6
xal,j*
75i
M_e\
PL/I i@e.Uzn
Test: procedure options(main); /*p4(D_A
declare My_String char(20) varying initialize('Hello, world!'); o^dt#
&
put skip list(My_String); S+H#^WSt
end Test; 7iu?Q
W!q'wrIx(
^@l_K +T
Prolog fZ$<'(t
goal /]%,C
write("hello,world!"). 3S1V^C-eBx
>SpXB:wx
~J?O ~p`&
Python AE!WYE
#!/usr/local/bin/python LinARMPv
print "Hello, world!" #@H{Ypn`
'&Ox,i]t
}u
cqzdk#2
REXX iKv`[k
say "Hello, world!" 1<A+.W
k$:QpTg[
f^](D'L?D
Ruby YS=|y}Q|7d
#!/usr/bin/ruby [W=%L:Ea
print "Hello, world!\n" IcZ_AIjlk
;OQ-T+(T
d='z^vHK
Scheme lz\{ X
(display "Hello, world!") *cCr0\Z`
(newline) +4\JY"oi
*LcLYxWo
zr@Bf!VG:
sed (需要至少一行输入) i0/gyK
sed -ne '1s/.*/Hello, world!/p' s([9/ED
Fp4?/-]
C&D]!ZvF
Smalltalk W~p^AHco`
Transcript show: 'Hello, world!' I=D{(%+^d
T[a1S ?_*T
ju0]~,
SNOBOL %8/Gsu;
OUTPUT = "Hello, world!" 5FqUFzVqsl
END bL_s[-7
Uy^Hh4|
AKx\U?ei7
SQL dgd&ymRm
:
create table MESSAGE (TEXT char(15)); {l{p
insert into MESSAGE (TEXT) values ('Hello, world!'); ?I}jsm1)
select TEXT from MESSAGE; +P|$T:b
drop table MESSAGE; 7c!oFwM
~6U@*Svk
3Zg=ZnF
Tcl S;NChu?8
#!/usr/local/bin/tcl Rg)\o(J
puts "Hello, world!" yGgHd=?
`}k!SqG
<kn#`w1U'
TScript %8`zaa
? "Hello, world!" 95(c{
l/
GiHJr1
^i&Qr+v
Turing )ZzwD]
put "Hello, world!" ]]o7ej
i051qpj
N;A1e@bP
UNIX-style shell rsBF\(3b~
程序中的/bin/sh可改为您使用的shell e;x`C
GW'=/
z7
#!/bin/sh 6v GcM3M
echo 'Hello, world!' Gcg`Knr
Xfx(X4$ 9
}@@1N3nnxV
GUI 0LoA-c<Ay
M7yJ2u <Ty
Delphi M<7<L
program HelloWorld; Bx
E1Ky8@A
uses aFo%B; 8m
Dialogs; I OF~V)8k=
begin HG@!J>YaD
ShowMessage('Hello, World!'); OW)8Z60
end. \yb^%$hZ0
+x
G] (?
Ec_
G9&
Nuva ZT8. r0
<. y>2v 9;Qp
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) %'\D_W&
.> pSQ3SM
<WaiJy?
PZLW yp
Visual Basic ] 5P{*
MsgBox "Hello, world!" 'BAe>r_Pn
'或者 \'E _
Print "Hello, world!" 6e |
Aplqxvth
Uw61X>y=
Visual FoxPro sf\;|`}
? "Hello, world!" .%->
+hjc~|RK
V$q%=Sip
X11 _I{&5V~z
用一个程序 5`x9+XvoN
UeHS4cW
xmessage 'Hello, world!' lBQ|=
rUlpo|B
用C++和gtkmm 2 'U1r}.+b>
"j$}'uK<
#include <iostream> [FiXsYb.8
#include <gtkmm/main.h> q6j]j~JxB
#include <gtkmm/button.h> }'H Da M
#include <gtkmm/window.h> M*c\=(
using namespace std; _nx|ZJ
H:[z#f|t
class HelloWorld : public Gtk::Window 3J'a
{ Y#]Y$n
public: W:rzfO.`Z
HelloWorld(); DT 9i<kl
virtual ~HelloWorld(); ACyQsmqm:
protected: r{%NMj
Gtk::Button m_button; iZSjT"l^
virtual void on_button_clicked(); 2vWkAC;
}; }=f}@JlFB
\Z+v\5nmO
HelloWorld::HelloWorld() : m_button("Hello, world!") }ZYK3F
{ J8b]*2D
set_border_width(10); E&&