“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。 E;SFf
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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》。 !Wk "a7
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以下是用不同语言写成的Hello World程序的几个例子: pAYuOk9n
Ada {chl+au*l
with Ada.Text_Io; use Ada.Text_Io; g~]FI
procedure Hello is (,k=mF
begin ?V+=uTCq
Put_Line ("Hello, world!"); UaB!,vs3st
end Hello; :'03*A_[
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汇编语言 is,_r(S
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x86 CPU,DOS,TASM Cs< d\"+
MODEL SMALL .Q7z<Q
IDEAL oVs&r?\Z
STACK 100H `R\0g\
eG<32$I
DATASEG i4l?q#X
HW DB 'Hello, world!$' 6w'^,V
D0~mu{;c$
CODESEG I2b[
MOV AX, @data &WIPz\
MOV DS, AX !GO4cbdQ
MOV DX, OFFSET HW K=;p^dE
MOV AH, 09H +g*Ko@]m>
INT 21H tkA '_dcIC
MOV AX, 4C00H hP #>`)aNY
INT 21H dS-l2 $n
END 2Tp.S3
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x86 CPU,GNU/Linux,NASM : )&_
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). FXIQS'
;Enter this into "hello.asm" then type: ^
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;"nasm -f elf hello.asm" 5 gE
;"ld hello.o -o hello" hTF]-&
hZ
;"./hello" Wn|w~{d{
v vFX\j3
section .data ;data section declaration h4]yIM`8d
msg db 'Hello World!',0AH nlKWZYv
len equ $-msg ;string length N(Cfv3{
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section .text ;code section declaration ]cbY@U3!2
global _start ;entry point (start of execution) qT(j%F
_start: mov edx,len ;string length t6j|q nfw
mov ecx,msg ;string start 2$|WXYY
mov ebx,1 ;file handle: stdout IRLT-
mov eax,4 ;sys_write <EJC.WWJa
int 80h ;kernel system call /"
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mov ebx,0 ;return value SH"O<cDp
mov eax,1 ;sys_exit jZ)1]Q2
int 80h ;kernel system call {'JoVJKv
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x86 CPU,Windows,MASM32 V^"5cW
.386 /Ue~W,|
.model flat,stdcall Rc @p!Xi
option casemap:none &R2 5J$
;Include 文件定义 xGN&RjPk\
include windows.inc iCx}v[;Ol
include user32.inc 8|gwH2st~
includelib user32.lib zbrDDkZ1
include kernel32.inc
EP*"=_
includelib kernel32.lib 7D<M\l8G
;数据段 5G|(od3
.data x)s`j(pYC
szCaption db 'A MessageBox!',0 Que-
szText db 'Hello,world!',0 YajUdpJi
;代码段 //xxSk
.code |?g k%g
start: n"*A.
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK |-bAzt
invoke ExitProcess,NULL <a; <|Fm.
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> h",kA(+P
end start ><+wH b
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AWK }<m9w\pA
BEGIN { print "Hello, world!" } w\!aKeP'
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BASIC z^bv)u
传统版BASIC(例如GWBASIC): *Mk5*_
It&$R`k
10 PRINT "Hello, world!" mGb,oj7l
20 END (V5_q,2
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或在提示符输入: <7-3j{065
rxJmK$qd
?"Hello, world!":END l!5fuB8
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现代版BASIC(例如Quick BASIC): &c%;Lo
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Print "Hello, world!" p@ 0Va
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以下的语句在Quick BASIC中同样有效: 7Rwn{]r
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? "Hello,world!" X|++K;rtfE
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0CX2dk"UB^
BCPL K 0R<a~
GET "LIBHDR" ?hHVawt
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LET START () BE (hr*.NS#
$( Fu].%`*xJ
WRITES ("Hello, world!*N") ):-\TVz~
$) 06X4mu{
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{B+|",O5)
Befunge _HjS!(lMk
"!dlrow olleH">v ;W 16Hr Z
, #l2KJ7AMK
^_@ CEzwI _
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-*HR0:H
Brainfuck F/}(FG<'>I
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< WTK )SKa,.
+++++++++++++++.>.+++.------.--------.>+.>. W!6&T [j>
&V"9[0
()%NotN;
C ?QR13l(
#include <stdio.h> VEFUj&t;xW
:Aq==N_/2
int main(void) R<]f[
{ !X5n'1&
printf("Hello, world!\n"); |}$ZOwc
return 0; $IUe](a{d
} Qx<86aKkF
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C++ Y~,ZBl,
#include <iostream> xQ~}9Kt\
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int main() 4@0y$Dv\
{ x:dI :G
std::cout << "Hello, world!" << std::endl; n3x<L:)
return 0; BeFCt;
} -aSj-
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P~xP@?I%
C++/CLI ZE393FnE
int main() ,Kl6vw8Htg
{ ~!//|q^J]
System::Console::WriteLine("Hello, world!"); A-S!Z2m\
} a>6@1liT
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C# (C Sharp) 5|:t$
class HelloWorldApp }:SWgPfc
{ (58}G2}q
public static void Main() $<DcbJW
{ m6wrG`-di
System.Console.WriteLine("Hello, world!");
{@E(p4W
} ^&8FwV]
} >tGl7Ov
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mqrV:3}
COBOL
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IDENTIFICATION DIVISION. 7^bde<0
PROGRAM-ID. HELLO-WORLD. J) I|Xot
(?y (0%q
ENVIRONMENT DIVISION. jq_E{Dq1
'jnR<>N
DATA DIVISION. wg.TCT2
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PROCEDURE DIVISION. VUd=|$'J
DISPLAY "Hello, world!". 9=o;I;I
STOP RUN. ?hfyQhR
QP?eKW9 :
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Common Lisp 4arqlzlo
(format t "Hello world!~%") 5oOF|IYi
I
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iCXKi7
DOS批处理 RvXK?mL4F
@echo off :n0czO6E
echo "Hello, world!" ?j:U<TY)
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Eiffel _@] uHp|
class HELLO_WORLD Lnk(l2~U
Gq)E,Ln&d
creation veq.48E]
make <h"07.y
feature P,RdYM06
make is _+=M)lPm
local V(#z{!
io:BASIC_IO i!KZg74V
do + $Yld{i
!!io F<9S,
io.put_string("%N Hello, world!") IVY{N/ 3|
end -- make 3q}fDM(@J
end -- class HELLO_WORLD rb_FBa%
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4). i4]%LH
Erlang 7c8A|E0\mF
-module(hello). mN^/
-export([hello_world/0]). '.$va<
hO?RsYJ.F
hello_world() -> io:fwrite("Hello, World!\n"). h+d \u
q'9}Hz
'h*^;3@*
Forth .5AyB9a%&
." Hello, world!" CR J{w[vcf
xtq='s8e
Ec4+wRWk85
Fortran P/?'ea
WRITE(*,10) c|hT\1XR,
10 FORMAT('Hello, World!') ) 1PjI9M
STOP m ,|)$R
END 0x1#^dII
\ )'`F;
P
#]vs*Sz
HTML Ex`!C]sQ
<HTML> &i{>Li
<HEAD> 3*<?'O7I0
<TITLE> Hello World! </TITLE> 5vSJjhS
</HEAD> |%HTBF
<BODY> aM6qYO!jA
<p>Hello World!</p> >0c4C<_
</BODY> @b]?Gg
</HTML> 9vL n#_
V/,@hv`+
Kh'7N!
HQ9+ MpCK/eiC
H /&jh10}H
~k[mowz0
40i]I@:JK
INTERCAL D *Hy 2eZ.
PLEASE DO ,1 <- #13 xhTiOt6l
DO ,1 SUB #1 <- #238 >3SZD
DO ,1 SUB #2 <- #112 yKb+bm&5:'
DO ,1 SUB #3 <- #112 NpLO_-
DO ,1 SUB #4 <- #0 |f}1bJE+
DO ,1 SUB #5 <- #64 H4Lvw8G
DO ,1 SUB #6 <- #238 gq|]t<'
DO ,1 SUB #7 <- #26 H="E#AC%8/
DO ,1 SUB #8 <- #248 *Y\C5L]
DO ,1 SUB #9 <- #168 {wq~+O
DO ,1 SUB #10 <- #24 ]hHL[hoFC
DO ,1 SUB #11 <- #16 9esMr0*=
DO ,1 SUB #12 <- #158 W!=X_
DO ,1 SUB #13 <- #52 xZc].l6
PLEASE READ OUT ,1 X8uAwHa6F
PLEASE GIVE UP E|~)"=
EG;y@\]
GFX$vn-/F
Java A^3M~
public class Hello x(r~<a[
{ PYhRP00}M
public static void main(String[] args) 2M`:/ shq
{ r&0IhE
System.out.println("Hello, world!"); tX'2 $}
} "MX9h }7
} tA{B~>
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58>C,+
JSP [19QpK WM
<% P;7
Y9}
out.print("Hello, world!"); zxhE9 [`*e
%> /Y_)dz^@
/UP1*L
yR'%UpaE
MIXAL kl+^0i
TERM EQU 19 the MIX console device number !=SBeq
ORIG 1000 start address *+rWn*L
START OUT MSG(TERM) output data at address MSG DV5K)m&G
HLT halt execution +ebmve \+
MSG ALF "MIXAL" appWq}db
ALF " HELL" ^0T DaZDLp
ALF "O WOR" tsf)+`vt
ALF "LD " j.:I{!R#
END START end of the program -qNun3
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Nuva %}/ |/=
<..直接输出..> tmVGJ+gz
Hello, world! v3I-i|L<)
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<..或者..> Bh0hUE
6t!PHA
<. hgPzx@
// 不带换行 glI4Jb_[
? "Hello, world!" s1kG:h2|$
C;jV)hr6P
// 或者 S(
Vssi|y
^X\SwgD2w
// 带换行 Uz$.sa
?? 'Hello, world!' =b_/_b$q
.> /_{B_2i/>
yNDplm|9*
[#mRlL0yk
OCaml (JI[y"2
let main () = J]4pPDm
print_endline "Hello world!";; <%ba
3<sg
Z#znA4;)
T6^H%;G
Pascal "fN=Y$G
program Hello; :ND e<6?u
begin dK d"2+fH
writeln('Hello, world!'); kPvR ,
end. J<h!H
/c|X:F!;X#
RTQtXv6mD
Perl 5!jU i9
#!/usr/local/bin/perl 3Q:Hzq G
print "Hello, world!\n"; O;8 3A
!HCuae3_
=tQ^t4_
PHP ZgI ?#e
<?php efXiZ
print("Hello, world!"); #BhDC.CcW
?> `:#IZ
lNbAt4]}f(
\\9I:-j:p
Pike H7?Sd(U
#!/usr/local/bin/pike q<Z`<e
int main() c5- 56Q
{ {NTMvJLm
write("Hello, world!\n"); D&-cNxh
return 0; a%XF"*^v
} 6z2W N|78
/L^pU-}Z0
<1eD*sC?g
PL/I _2~+%{/m,
Test: procedure options(main); 5lrjM^E|
declare My_String char(20) varying initialize('Hello, world!'); H{U(Rt]K
put skip list(My_String); 5[0W+W
end Test; ,?oC+9w
./i5VBP5
`NB6Of*/
Prolog w0&|8y
goal Y{D?&x%yq
write("hello,world!"). =x3T+)qCNX
%}[/lIxaE
# ~(lY}
Python %@MO5#)NI
#!/usr/local/bin/python Lu5lpeSQ
print "Hello, world!" *|({(aZ
3{H&{@Q
;|r<mT/,
REXX =HHtLW.|,
say "Hello, world!" hEMS
(MzThGJK_
awU&{<,=g
Ruby %v)+]Ds{
#!/usr/bin/ruby d
A>6
print "Hello, world!\n" ~@d4p|K
=<[M$"S7d6
`dJ?j[P,p
Scheme S5/p3;O\c
(display "Hello, world!") qlm7eS"sy
(newline) o7kQ&w
#ja6nt8GC
J*D3=5&
sed (需要至少一行输入) s)~Wcp'+M:
sed -ne '1s/.*/Hello, world!/p' $J9/AFzO"
4Hq6nT/
bPA1>p7
Smalltalk BT|n+Y[
Transcript show: 'Hello, world!' OMm'm\+/
&xE+PfX
:V~
AjV
SNOBOL W(o#2;{ln
OUTPUT = "Hello, world!" Wxzh'c#\8
END Q5 =
siz:YRur
kJ"}JRA<
SQL 4vyJ<b
create table MESSAGE (TEXT char(15)); Fd/Ra]@\Y
insert into MESSAGE (TEXT) values ('Hello, world!'); Rja>N)MzBf
select TEXT from MESSAGE; '#u=wyp
drop table MESSAGE; Z> <,t~o}
S.|%dz
}WnoI2
Tcl chXTFLC~
#!/usr/local/bin/tcl UHS{X~CS
e
puts "Hello, world!" p+}eP|N
d6ckvD[
gr \vC
TScript RU+F~K<
? "Hello, world!" Sh(XFUJ
{nH*Wu*^
.6A{
Turing suE#'0K
put "Hello, world!" g?{7DI`
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