“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。 Z$OF|ZZQ
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 jSeA%Te
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以下是用不同语言写成的Hello World程序的几个例子: % +kT
Ada 0[Xt,~
with Ada.Text_Io; use Ada.Text_Io; b'Fx),
procedure Hello is @e.OU(Bf
begin BNL8hK`D
Put_Line ("Hello, world!"); ooLnJY#
end Hello; )Dk0V!%N
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w
汇编语言
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zCBtD_@
x86 CPU,DOS,TASM I{?E /Sc
MODEL SMALL 4pfix1F g
IDEAL :|n>H+Y
STACK 100H *! r\GGb
bMqu5G_q
DATASEG )}k?r5g
HW DB 'Hello, world!$' (PsSE:r}+
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CODESEG .q_uJ_qu-
MOV AX, @data V 9QvQA
r
MOV DS, AX ~`G;=ITo
MOV DX, OFFSET HW j$|Yd=
MOV AH, 09H i">z8?qF
INT 21H DK@w^ZW6JA
MOV AX, 4C00H %|D\j-~
INT 21H RKoP6LGw
END qSpa4W[
aiR|.opIb
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x86 CPU,GNU/Linux,NASM ZyS;+"
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). P[#WHbn
;Enter this into "hello.asm" then type: ."!8B9s
;"nasm -f elf hello.asm" 2#n$x*CY
;"ld hello.o -o hello" :b M$;
;"./hello" ~7ATt8T
shDt&_n
section .data ;data section declaration Cb@S </b
msg db 'Hello World!',0AH XZep7d}
len equ $-msg ;string length w371.84
!0. 5
section .text ;code section declaration e&H<lT
global _start ;entry point (start of execution) -aH?7HV}
_start: mov edx,len ;string length +}(B856+
mov ecx,msg ;string start U3_yEvZ
mov ebx,1 ;file handle: stdout ?) ,xZ1"
mov eax,4 ;sys_write :d%
-,v
int 80h ;kernel system call Iu1Sj`A
:_~PU$%0
mov ebx,0 ;return value ktw!T{
mov eax,1 ;sys_exit Pv2nV!X6
int 80h ;kernel system call ]:E! i^C`Z
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>/HU'
x86 CPU,Windows,MASM32 8+F2
!IM
.386 *CSFkWVa
.model flat,stdcall W>Kn*Dy8~
option casemap:none %SXqJW^:
;Include 文件定义
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include windows.inc iC">F.9#
include user32.inc m`t7-kiZ
includelib user32.lib JdnZY.{S0
include kernel32.inc 3[$VW+YV
includelib kernel32.lib .KV?;{~q@
;数据段 k<y$[xV
.data ?*g]27f11
szCaption db 'A MessageBox!',0 2C>PxA6l
szText db 'Hello,world!',0 O<5bsKw'r
;代码段 Qw ED>G|
.code ZtiOf}@i\
start: &E~7ty'
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK m-K6y7t
invoke ExitProcess,NULL _IGQ<U <z
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> rB\UNXy
end start @eul~%B{X
. 2WZb_B
Wo%&,>]<H
AWK 5m/r,d^H
BEGIN { print "Hello, world!" } RV~w+%f
w t}a`hxu
uAJC Q)@
BASIC Q"\[ICu!,
传统版BASIC(例如GWBASIC): ,}<v:!
=+u$ZZ0+]o
10 PRINT "Hello, world!" h^4oy^9
20 END `8Gwf;P1
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或在提示符输入: ) ":~`Z*@
6Rso}hF}}
?"Hello, world!":END V%+KJ}S!Z
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现代版BASIC(例如Quick BASIC): E+_}8J .
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Print "Hello, world!" -?ip ?[Z
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以下的语句在Quick BASIC中同样有效: dW91nTQ:
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? "Hello,world!" V9+7A
>q}EZC
Z#0z #M`
BCPL 15870xS
GET "LIBHDR" ^rI&BN@S
9yQ[ *
LET START () BE b"J(u|Du`
$( FQ[::*-
WRITES ("Hello, world!*N") Z0x N9S
$) :f`1
*l|CrUa
BPW:W }
Befunge g{&ux k);
"!dlrow olleH">v OUD<+i,
, U*zjEY:A
^_@ (FBKP#x)^
1=s%.0
]+oPwp;il
Brainfuck Lz4iLLP
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< upWq=_
+++++++++++++++.>.+++.------.--------.>+.>. FG'1;x!
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P
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C [
%r :V"
#include <stdio.h> " #JRw
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int main(void) m]V5}-?al
{ *.20YruU;j
printf("Hello, world!\n"); #[2]B8NZ
return 0; }F-W OQ
} ~v2_vEu}JX
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C++ Wh"oL;O
#include <iostream> 7j5 l?K-
d!8`}L:=M
int main() "GgK,d}%
{ ]^"*Fdn
std::cout << "Hello, world!" << std::endl; Uq7 y4zJ
return 0; Q[S""P.Z|
} J-hP4t&x
jg#%h`
m>~%.
(/x
C++/CLI ?~;G)5
int main() wS#.Wzp.w
{ Rm{S,
System::Console::WriteLine("Hello, world!"); q*,];j/>k
} YcT!`B
&ciU`//`
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C# (C Sharp) 8I3"68c_a
class HelloWorldApp jCxw|tmgq
{ q@H?ohIH
public static void Main() 3S ,D~L^
{ NFv9%$l-
System.Console.WriteLine("Hello, world!"); ]_@5LvI
} YeK PoW
} XX#YiG4|J
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Yu`b[]W
COBOL \|R P-8
IDENTIFICATION DIVISION. Q3*@m
PROGRAM-ID. HELLO-WORLD. Tt<Ry'Z$3
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ENVIRONMENT DIVISION. PSNfh7g
$d'GCzYvZ
DATA DIVISION. ,~p'p)
E80C0Q+V
PROCEDURE DIVISION. HI*xk
DISPLAY "Hello, world!". |]w0ytL>(2
STOP RUN. {=VauF
:%~+&qS
-$!`8[fM
Common Lisp /{#1w\
(format t "Hello world!~%") "z8L}IC!e5
POdk0CuX
HeCQF=R
DOS批处理 B0T[[%~3M
@echo off :$lx]
echo "Hello, world!" )<nr;n
!c(B c^
3V>2N)3`A
Eiffel u(S~V+<@Z
class HELLO_WORLD LxC*{t/>8
E`}KVi57
creation F
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make +q[puFfl
feature ;9MsV.n
make is Ew~piuj
local ,Y6Me+5B
io:BASIC_IO v,#*%Gn`%
do =yJJq=!
!!io >vF=}1_L
io.put_string("%N Hello, world!") A
M8bem~
end -- make o|FRG{TJ
end -- class HELLO_WORLD J39,x=8LL
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sN.h>bd
Erlang 4IuQQ
-module(hello). C(qqGK{
-export([hello_world/0]). uU=O 0?'zq
a*@ 6G
hello_world() -> io:fwrite("Hello, World!\n"). f^z/s6I0
S4508l
YtI2Vr/9
Forth 7vax[,aI
." Hello, world!" CR t`1E4$Bb\
C%}}~Y
u|t<f`ze
Fortran <1cYz\/!M
WRITE(*,10) *J&XM[t
10 FORMAT('Hello, World!') LT']3w
STOP l(
/yaZ`
END 1$vsw
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eAR]~
NiW
HTML Op%}.9 ed
<HTML> H*BzwbM?
<HEAD> 8DHohhN
<TITLE> Hello World! </TITLE> +dIDFSd
</HEAD> ('BFy>@
<BODY> OLp;eb1g
<p>Hello World!</p> J-yj&2
</BODY> {U/a h2*
</HTML> 0 UdAF
b.V\EOk
%QH "x`;
HQ9+ 'S]7:/CI
H mv_N ns
,*ZdMw!
#/!fLU@
INTERCAL !.9pV.~
PLEASE DO ,1 <- #13 }#va#Nb(,
DO ,1 SUB #1 <- #238 #-?C{$2I
DO ,1 SUB #2 <- #112 0]%0wbY1
DO ,1 SUB #3 <- #112 {YnR]|0&
DO ,1 SUB #4 <- #0 n%GlOKC
DO ,1 SUB #5 <- #64 PEqO<a1Z8
DO ,1 SUB #6 <- #238 ~$xLR/{y
DO ,1 SUB #7 <- #26 WxwSb`U|
DO ,1 SUB #8 <- #248 _EMq"\ND
DO ,1 SUB #9 <- #168 -v"\WmcS
DO ,1 SUB #10 <- #24 F/GfEMSE
DO ,1 SUB #11 <- #16 =8FV&|fP
DO ,1 SUB #12 <- #158 "|<6bA
DO ,1 SUB #13 <- #52 X-,scm
PLEASE READ OUT ,1 3{OY&
PLEASE GIVE UP H6i4>U*
itV@U
{!h|(xqN+
Java $=?1>zvF
public class Hello ".aypD)W
{ tg%s#lLeH
public static void main(String[] args) >;a_i>[
{ T1'8<pJ^
System.out.println("Hello, world!"); T4MB~5,i
} ~gU.z6us
} >b9nc\~
]*b}^PQM^
)Lt|]|1B{
JSP )\fAy
<% Zqwxi1
out.print("Hello, world!"); '@OqWdaR
%> "o"ujQ(v
4wfT8CL
/'vCO
|?L
MIXAL uFxhr2
<z
TERM EQU 19 the MIX console device number : V16bRpjL
ORIG 1000 start address zzmZ`Ya
START OUT MSG(TERM) output data at address MSG VK)1/b=yT
HLT halt execution UykOQ-2-n
MSG ALF "MIXAL" W[B%,Km%]
ALF " HELL" ={_.}
ALF "O WOR" ND);7
ALF "LD " Np$peT[
END START end of the program ':al4m"
kT|{5Kn&s
x0aPY;,N0
Nuva =~;SUO
<..直接输出..> R1.No_`PHq
Hello, world! n27df9L
=R+z\`2
<..或者..> dMkDNaH,
MZ" yjQ A
<. %N}OMc.W
// 不带换行 yVds2J'w-
? "Hello, world!" QUa_gYp0v
g-B~"tp
// 或者 dV+%x"[:
Cm)_xnv
// 带换行 fa#xEWaFr
?? 'Hello, world!' b'i-/l$
.> B<)c{kj
oy+`` W~
"$)Nd+ny
OCaml y k=o
let main () = [AAG:`
print_endline "Hello world!";; :5kgJu
&E98&[`7
L0ZgxG3:g
Pascal l+# l\q%l
program Hello; 2Eq?^ )s
begin ];@"-H
writeln('Hello, world!'); |a!AgvNF
end. P_:A%T
l!Bc0
:=J~t@
Perl w[g(8#*
#!/usr/local/bin/perl yO@KjCv"
print "Hello, world!\n"; m~KGB"
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,SEC~)L
PHP G/Ll4
:
<?php B+e$S%HV
print("Hello, world!"); u$T`Bn
?> 3&*_5<t\X
"YIrqk
\;"$Z9W
Pike Bvbv~7g(
#!/usr/local/bin/pike 'EsN{.l?
int main() n,KOQI;
{ bj6-0`
write("Hello, world!\n"); .}KY*y
return 0; 8J60+2Wa
} #ma#oWqF }
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jVh I`F{n
PL/I {/f\lS.5g
Test: procedure options(main); FmU>q)
declare My_String char(20) varying initialize('Hello, world!'); 8u+FWbOl]
put skip list(My_String); B o@B9/ABv
end Test; }1EfyR
UzLe#3MU
hAHZN^x&
Prolog X^L)5n+$X
goal z$'_ =9yZ
write("hello,world!"). ZY%]F,Y
,,*i!%Adw
4]\f}
Python T<!&6,N A
#!/usr/local/bin/python [c6I/U=-
print "Hello, world!" yc|j]?
eUiJl6^x
R-v99e iN
REXX %m8;Lh-X
say "Hello, world!" L%D:gy9o
YXD6GJWo
wd4wYk\
Ruby UNc!6Q-.
#!/usr/bin/ruby $6p_`LD0
print "Hello, world!\n" @S3G> i
A]VcQ_e
!1MSuvWP
Scheme .A;D-"!
(display "Hello, world!") idL6 *%M
(newline) \/8 I6a=
M[wd.\
%
T~I5W=y
sed (需要至少一行输入) 3EGQ$
sed -ne '1s/.*/Hello, world!/p' *W()|-[V3
<|= UrG
5l"EQ9
Smalltalk d8 1u
Transcript show: 'Hello, world!' ?y( D_Nt L
5B+>28G%
Vc!` BiH
SNOBOL R-Y |;
OUTPUT = "Hello, world!" Z
P\A
END 79:Wo>C3-
vfG4PJ 6
)9sRDNr
SQL yRQR@
create table MESSAGE (TEXT char(15)); TV$Pl[m
insert into MESSAGE (TEXT) values ('Hello, world!'); d/>owCwQ
select TEXT from MESSAGE; ?2ZggV
drop table MESSAGE; #NZ\UmA
*%JncK'
'I|A*rO
Tcl z@E-pYV
#!/usr/local/bin/tcl _=RA-qZ"
puts "Hello, world!" n-m+@jR z
nBs%k!RR
[zp v3Uw
TScript 7.4Q
? "Hello, world!" w,L P M+
5m,{?M`
?haN ;n6'
Turing .k5
TQt
put "Hello, world!" |*079v
j{,3!
G_E U/p<Q
UNIX-style shell @=o1q=5@8
程序中的/bin/sh可改为您使用的shell wT?.Mte
@fR^":.h
#!/bin/sh /H+br_D9
echo 'Hello, world!' @DgJxY|
yYmV^7G
F"O{eK0T
GUI mG[S"?C
;Ab`b1B
Delphi jbQ2G|:Q
program HelloWorld; k8^!5n
uses wCiDvHF5+C
Dialogs; j&(2ze:=*$
begin ;2"#X2B
ShowMessage('Hello, World!'); %FnaS
u
end. 9tmYrhb$
t ZUZNKODW
V6l*!R
Nuva P+pL2 BA
<. m#SDB6l
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) qM
F'&
.> 1Sox@Ko
`6V-a_8;[
t1p}
Visual Basic 6'y+Ev$9
MsgBox "Hello, world!" LO@.aJpp
'或者 J<x?bIetj
Print "Hello, world!" gwk$|aT@
{GDMix
4fBgmL
Visual FoxPro Tj@}O:q7:
? "Hello, world!" l c)*HYqU
fq/F|c
wsp&U
.z
X11 ,j
wU\xo`C
用一个程序 !}wJ+R ^2
oXwoi!
xmessage 'Hello, world!' $2E n^
LLv~yS O
用C++和gtkmm 2 V%k[S|f3
?&Si P-G
#include <iostream> L%`~`3%n-
#include <gtkmm/main.h> T[M?:~
#include <gtkmm/button.h> X}'3N'cbkU
#include <gtkmm/window.h> 5)4*J.
using namespace std; )#[?pYd
DUf=\p6`f
class HelloWorld : public Gtk::Window :$d3}TjsA+
{ ~rEU83
public: ]g-(|X~>
HelloWorld(); .>>@q!!s!
virtual ~HelloWorld(); sKIWr{D
protected: tr"iluwGc
Gtk::Button m_button; PETrMu<
virtual void on_button_clicked();
VVeO>j d
}; LFy5tX#
#(3w6l2
HelloWorld::HelloWorld() : m_button("Hello, world!") /b,M492
{ 3:jKuOX
set_border_width(10); <lZyUd
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); BDZB;DPb
add(m_button); #6'oor X
m_button.show(); W"4E0!r
} x{<WJ|'B
g[Ah>
5
HelloWorld::~HelloWorld() {} a`(6hL3IT
6XUcJ0
void HelloWorld::on_button_clicked() bs
U$mtW
{ o%h"gbvMY!
cout << "Hello, world!" << endl; a*hOT_;#
} qa#Fa)g*
bW<_K9"
int main (int argc, char *argv[]) &W