“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<q :$
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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》。 l+V,DCE
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以下是用不同语言写成的Hello World程序的几个例子: )k&a}u5y
Ada \~d";~Y`
with Ada.Text_Io; use Ada.Text_Io; V@7KsB
procedure Hello is K3uG2g(>2
begin KIA 2"KbjG
Put_Line ("Hello, world!"); @~<j&FTT
end Hello; &
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)b<k#(i@#
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汇编语言 50TA:7
WwF~d+>|C
x86 CPU,DOS,TASM )15Z#`x
MODEL SMALL ONNpiK-
IDEAL ,:~0F^z
STACK 100H {U
'd}Q
HkV1sT
DATASEG IX: 25CEI2
HW DB 'Hello, world!$' w{~+EolK
ms($9 Lv/
CODESEG nzjkX4KV
MOV AX, @data O%1v)AT&\
MOV DS, AX ]sz3]"2
MOV DX, OFFSET HW l$K,#P<)
MOV AH, 09H AM"Nn
L"
INT 21H )&era` e[
MOV AX, 4C00H Uie?9&3
INT 21H -U<Upn)2
END Z3k(P
)eUW5
tS
Zh5RwQNE~
x86 CPU,GNU/Linux,NASM 'Y$R~e^Y?
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). c`lJu_
;Enter this into "hello.asm" then type: 48|s$K ^
;"nasm -f elf hello.asm" t
E` cau
;"ld hello.o -o hello" /&u<TJ4
;"./hello" N=:5eAza
Wv__ wZ
section .data ;data section declaration Ngr/QL]Q
msg db 'Hello World!',0AH VIP7OHJh
len equ $-msg ;string length *Ype>x{
nf1#tlIJd
section .text ;code section declaration IchCACK
global _start ;entry point (start of execution) ,f}UGd[a
_start: mov edx,len ;string length i>EgG5iJ
mov ecx,msg ;string start 7NC=*A~
mov ebx,1 ;file handle: stdout 1h*)@
mov eax,4 ;sys_write 9ukg }_Hx
int 80h ;kernel system call ]M)O YY
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mov ebx,0 ;return value 2&+#Vsm`V
mov eax,1 ;sys_exit Auy_K?he]
int 80h ;kernel system call T081G`li
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yCJ Fo
x86 CPU,Windows,MASM32 st"{M\.p
.386 @
S <-d
.model flat,stdcall 8 #ndFpu
option casemap:none .nYUL>
;Include 文件定义 #jAqra._b
include windows.inc Xh J,"=E+
include user32.inc h25G/`
includelib user32.lib :{NC-%4o0
include kernel32.inc f84:hXo6
includelib kernel32.lib h'
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;数据段 l5+gsEux]
.data izKfU?2]X@
szCaption db 'A MessageBox!',0 |F.)zC5{
szText db 'Hello,world!',0 {]z4k[;.h
;代码段 ,!V]jP)
.code /(O$(35
start: K1V#cB
WO
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK {;2vmx9
invoke ExitProcess,NULL &a/__c/l
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 1!pa;$L
end start r>jC_7
!6Sd(2
!*2%"H*
AWK fN"(mW>!
BEGIN { print "Hello, world!" } Bl9jkq
]
iHf-{[[Z
{pb>$G:gfx
BASIC =AVgIv
传统版BASIC(例如GWBASIC): ~&\ f|%
a[lY S{
10 PRINT "Hello, world!" x8;`i$
20 END *9)SmSs
b3wM;jv
或在提示符输入: mMMQ|ea
E;21?`x5
?"Hello, world!":END #,{+3Y&5-+
\5Vde%!$Z
现代版BASIC(例如Quick BASIC): )
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SWp1|.=Sm
Print "Hello, world!" i{D=l7j|w
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以下的语句在Quick BASIC中同样有效: dD<fn9t
TO2c"7td
? "Hello,world!" Mg#j3W}]
2MA]j T
#_mi `7!B#
BCPL nA?Hxos
GET "LIBHDR" DO7W}WU
~Oe Ppa\
LET START () BE fw oQ'&
$( fQLt=Lrp
WRITES ("Hello, world!*N") _LwOOZj
$) vIvVq:6_3
l"n{.aL
p;?*}xa
Befunge S4witIK5
"!dlrow olleH">v x.1-)\
, $,xnU.n
^_@ IlX$YOf4
|^28\sm2e
iTW? W\d
Brainfuck '03->7V
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< %p&k5:4<"#
+++++++++++++++.>.+++.------.--------.>+.>. q9"=mO0J+
&D%(~|'
0J.dG/I%
C &rDM<pO #-
#include <stdio.h> gPC*b+
LJX-AO.4
int main(void) `>DP,D)w(
{ :Q+5,v-c
printf("Hello, world!\n"); :|o<SZ
return 0; kP xa7
} pj?XLiM54%
0?WcoPU
bslrqUk_`=
C++ ^$%Z!uz
#include <iostream> @H !$[m3
g<*BLF
int main() E{HY!L[
{ q P ;A}C
std::cout << "Hello, world!" << std::endl; H"2uxhdLK3
return 0; F_xbwa*=
} ?=GXqbS"
;M]C1!D9#
RvJ['(-
C++/CLI N8KQz_]9I
int main() "l={)=R
{ tweY'x.{
System::Console::WriteLine("Hello, world!"); .kTG[)F0b
} JO14KY*%
7^}Ll@
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C# (C Sharp) EL3|u64GO
class HelloWorldApp @v\*AYr'M
{ K.gEj*@
public static void Main() Z -%(~
{ 61U<5:#l
System.Console.WriteLine("Hello, world!"); LtT\z<bAI
} (I@bkMp
} E^w:KC2@
avmcw~
TF
~f|Z%&l|
COBOL "i:T+#i({O
IDENTIFICATION DIVISION. %hlspI(J
PROGRAM-ID. HELLO-WORLD. [nxE)D
4Ij-Ilg)%
ENVIRONMENT DIVISION. i?Ss: v^
hO{cvHy`
DATA DIVISION. _wb0'xoK"
H7i$xWs
PROCEDURE DIVISION.
7\o!HMfK
DISPLAY "Hello, world!". H1!iP$1#V
STOP RUN. ch5s<x#CE
@1zQce>
K}[>T(0E
Common Lisp cYNJhGY
(format t "Hello world!~%") R E1/"[t
qDWsvx]
m?s}QGSka
DOS批处理 bg|!'1bD`5
@echo off f[gqT
yiP
echo "Hello, world!" G0n'KB
>#+IaKL7
_<ut)G^9
Eiffel >Ps7I
class HELLO_WORLD uhN%Aj\iu(
NGYyn`Lx
creation ;0ME+]`"3
make s?WCnT
feature n{*e 9Aw
make is (Lh#`L?x
local vUC!fIG
io:BASIC_IO w^K^I_2ge
do 6VD1cb\lF
!!io ryO$6L
io.put_string("%N Hello, world!") S)He$B$pp
end -- make iq?#rb P#I
end -- class HELLO_WORLD 9^P2I)aD
P[t$\FS
Kex[ >L10G
Erlang Z: 2I/
-module(hello). 33:DH}
-export([hello_world/0]). /Tz85 [%6
`n!viW|tB
hello_world() -> io:fwrite("Hello, World!\n"). \(I6_a_{
Z.Rb~n&
G@S&1=nj3
Forth X7UBopm&
." Hello, world!" CR EjEFg#q
K|W^l\Lt
mN0=i(H<
Fortran mxrG)n6Y
WRITE(*,10) vUQFQ
10 FORMAT('Hello, World!') Bz8 &R|~>"
STOP B1N)9%
END >5~7u\#9
6FfOH<\z6i
} :iBx
HTML b|^I<7
<HTML> ^ L:cjY/
<HEAD> zH)_vW
<TITLE> Hello World! </TITLE> l QPqcZd
</HEAD> ? y},,
<BODY> (k-YI{D3
<p>Hello World!</p> uK*Nu^
</BODY> Z+s%;f;
</HTML> crA:I"I
QhGXBM
,S[K{y<
HQ9+ x_@i(oQ:_
H 3bC
yTZk
}{7e7tW6
#*q2d
INTERCAL q5&Ci`
PLEASE DO ,1 <- #13 PW}OU9is
DO ,1 SUB #1 <- #238 p5c8YfM
DO ,1 SUB #2 <- #112 + R$?2
DO ,1 SUB #3 <- #112 #?}6t~
DO ,1 SUB #4 <- #0 ed~R>F>
DO ,1 SUB #5 <- #64 &ju-
DO ,1 SUB #6 <- #238 .I?@o8'x
DO ,1 SUB #7 <- #26 c $;\i
DO ,1 SUB #8 <- #248 upn8n vy4(
DO ,1 SUB #9 <- #168 8?TKN~ja
DO ,1 SUB #10 <- #24 lpQP"%q
DO ,1 SUB #11 <- #16 l_FGZ!7
DO ,1 SUB #12 <- #158 SVP:D3)
DO ,1 SUB #13 <- #52 \Z5+$Ij
PLEASE READ OUT ,1 74vmt<Q
PLEASE GIVE UP NlR"$
'|K.k6
GA^mgm"O
Java )jW(6
public class Hello /dHs &SU,
{ _ P ,@
public static void main(String[] args) u'9gVU B
{ dK?);*w]
System.out.println("Hello, world!"); &TN2 HZ-bJ
} B5=3r1Ly
} N}/>r D
8q_0,>w%
4-4?IwS
JSP G^h_YjR`*
<% QrjDF>
out.print("Hello, world!"); i3V/`)iz
%> Hw_o
w?
dBEIMn@
MB$a82bY
MIXAL '%4P;HO
TERM EQU 19 the MIX console device number <,39_#H?F3
ORIG 1000 start address W04av_u 5
START OUT MSG(TERM) output data at address MSG 4be> `d5j
HLT halt execution 4!%]fg}Um
MSG ALF "MIXAL" k0K A ~
ALF " HELL" -Q[g/%
ALF "O WOR" 6OUvrfC(H
ALF "LD " mVf.sA8
END START end of the program U~is-+Uq
Y5TS>iEE]
nsJ:Osq|
Nuva X B I;Lg
<..直接输出..> }0eg{{g8
Hello, world! X\2_;zwf
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<..或者..> *re 44
7c1+t_ Ew
<. 8GB]95JWwp
// 不带换行 mY2:m(9"5
? "Hello, world!" b :\D\X
P.4E{.)(
// 或者 Zw=G@4xoU
mx tgb$*
// 带换行 iz
x[
?? 'Hello, world!' EZAm)5:]A
.> 3z,2utH
ZJXqCo7O
H`|0-`q
OCaml rc~Y=m
let main () = Cg6;I.K
print_endline "Hello world!";; E`E'<"{Yd
: ^(nj7D
H1UL.g%d=
Pascal HWtPLlNt
program Hello; !LSs9_w
begin K`+vfqX
writeln('Hello, world!'); [}k|
end. x`2pr
x70N8TQ_gK
[b`$\o'-
Perl q6)N*?
#!/usr/local/bin/perl Fzs>J&sY&
print "Hello, world!\n"; Ru7L>(Njs
Yf(im
~I)uWo
PHP @a;sV!S{
<?php &q>h*w4O
print("Hello, world!"); q!*MH/R
?> `QLowna
sFx$>:$
%Rn:GK
Pike w|G~Il
#!/usr/local/bin/pike %F3}/2
int main()
sL~,
{ Q<'@V@H
write("Hello, world!\n"); |>JmS
return 0; 24|<<Xn
} 3;D?|E]1
a(Sv,@/
}9}w8R~E
PL/I N[ Q#R~Hn<
Test: procedure options(main); f(.6|mPp
declare My_String char(20) varying initialize('Hello, world!'); N l|^o{#
put skip list(My_String); z|%Bh
end Test; Q0SW;o7
-d_ 7*>m$
&Q+]t"OA!
Prolog rG5i-'
goal VD4S_qx
write("hello,world!"). yA0Y
14\*
8>v7v&Bh|
|0DP}
`~
Python h9Z[z73_a
#!/usr/local/bin/python CRd_}
print "Hello, world!" -&7=uRQk
Ps |QW
,*w>z
REXX g\j>qUjs%Q
say "Hello, world!" C&oxi$J:p+
FLEg0/m0
|w,^"j2R
Ruby u=l0f6W
#!/usr/bin/ruby *vXDuhQ
print "Hello, world!\n" 1l~.R#W G&
PIpWa$b
nO:HB.&@
Scheme X@eg<]'m
(display "Hello, world!") W9+h0A-
(newline) &0i71!Oy
/J8o_EV
q4zSS #]A
sed (需要至少一行输入) lk~dgky@
sed -ne '1s/.*/Hello, world!/p' q"l>`KCG`
6i^0T
n4XMN\:g{
Smalltalk ?9,YVylg
Transcript show: 'Hello, world!' 'iGMn_&
|y'b217t
u4C1W|x
SNOBOL FcY$k%;'Q
OUTPUT = "Hello, world!" MsSoX9A{D
END krwf8!bI
0rGj|@+;
yCZ2^P!a
SQL pO5v*oONz+
create table MESSAGE (TEXT char(15)); l`oT:
insert into MESSAGE (TEXT) values ('Hello, world!'); 8[f8k3g
select TEXT from MESSAGE; @ >
cdHv
drop table MESSAGE; 7kOE/>P?
Kl!DKeF
w# xncH:1
Tcl rg"TJ"Q-
#!/usr/local/bin/tcl J~fuW?a]r
puts "Hello, world!" 5=Zp%[#
r$Yh)rpt:
NH<Y1t
TScript ?@yank|
? "Hello, world!" z`;&bg\8
S/KVN(Z
`f2W;@V0
Turing j#4+-
put "Hello, world!" Cbazwq
,,zd.9n
(cu'
UNIX-style shell !7ph,/P$7
程序中的/bin/sh可改为您使用的shell C8!8u?k
!XkymIX~O.
#!/bin/sh k{zs578h2
echo 'Hello, world!' 7=; D0SS
5F% h>tqh
jM{(8aUG
GUI ^n6)YX
d%S=$}o
Delphi BYkVg2D(
program HelloWorld; m
j'"Z75
uses
#_?426Wfs
Dialogs; EKV+?jj$
begin ce 7Yr*ZB
ShowMessage('Hello, World!'); n.=e)*
end. o",f(v&u%
Tyg$`\#
/h1dm,
Nuva Fc34Y0_A
<. ppPG+[ cz
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) ]Y?{$M
G
.> bS_y_9K
!hwzKm=%N
^aGZJiyJ
Visual Basic l{M;PaJ`}
MsgBox "Hello, world!" Aqx3!
'或者 /&S~+~]n
Print "Hello, world!" a!TBk=P
8<E!rn-
,eZ;8W{G
Visual FoxPro m~Kch~~]
? "Hello, world!" hr)+Pk
!V$6+?2
"#_)G7W+e
X11 H9oXZSm
用一个程序 2GHXn:V
vB&F_"/X2
xmessage 'Hello, world!' u|]mcZ,ZW
]
P:NnKgK
用C++和gtkmm 2 J3]qg.B%z
Td["l!-fe
#include <iostream> + 1E?He:iQ
#include <gtkmm/main.h> $gj+v+%N
#include <gtkmm/button.h> qcR|E`k-G
#include <gtkmm/window.h> ]Ct`4pA
using namespace std; f.U0E6-(3N
z'vdC
class HelloWorld : public Gtk::Window se^NQ=
{ s$SU
vo1J
public: XvfcPI6
HelloWorld(); 7eaA]y~H
virtual ~HelloWorld(); yDu
yMt#
protected: 1kz9>;Ud6
Gtk::Button m_button; #;qFPj- v
virtual void on_button_clicked(); knNhN=hG+
}; T:w2
L@g Q L
HelloWorld::HelloWorld() : m_button("Hello, world!") w~cq%%
{ JxMyeo%gv
set_border_width(10); tu?Z@W/
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); -Fp!w "=T
add(m_button); i5L+8kx4
m_button.show(); ,T,B0
} >q}
!>k$B
Z=e[
!c
HelloWorld::~HelloWorld() {} vy2*BTU?
=,/A\F
void HelloWorld::on_button_clicked() !%Z)eO~Z
{ P ],)
cout << "Hello, world!" << endl; 0x3 h8fs
} h=iA;B^>
Xa@ _^oL
int main (int argc, char *argv[]) ~I/>i&