“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。 DXGO-]!!0
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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》。 zW _'sC
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以下是用不同语言写成的Hello World程序的几个例子: FN
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Ada gkdjH8(2
with Ada.Text_Io; use Ada.Text_Io; 3YRzBf:h
procedure Hello is r__M1
!3
begin %Fv)$ :b
Put_Line ("Hello, world!"); #? *jdN:
end Hello; d0^2<
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汇编语言 O+N-x8W{
t]ZSo-
x86 CPU,DOS,TASM !jbjrzv9
MODEL SMALL T,fz/5w
IDEAL z|2liQrf+
STACK 100H KOQTvJ_#
V_pBM
DATASEG Vh8uE
HW DB 'Hello, world!$' 5-*]PAC
9wC; m :
CODESEG k
y98/6
MOV AX, @data \);rOqh
MOV DS, AX X@)lPr$a
MOV DX, OFFSET HW 2$91+N*w9
MOV AH, 09H kYAvzuGRb
INT 21H nGVqVSxKT
MOV AX, 4C00H 9PAp*`J@kr
INT 21H UPYM~c+}
END Fk(5y)
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!iw
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x86 CPU,GNU/Linux,NASM S(6ZX>wv:
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). "ir*;|
;Enter this into "hello.asm" then type: EHZSM5hu
;"nasm -f elf hello.asm" "Tv7*3>
;"ld hello.o -o hello" ~-+Zu<
;"./hello" L DsYr]
8(}sZ)6
section .data ;data section declaration *`#,^p`j
b
msg db 'Hello World!',0AH TRZ^$<AG
len equ $-msg ;string length vF&b|V+,
Nz;;X\GI
section .text ;code section declaration c0 |p34
global _start ;entry point (start of execution) tp<V OUa
_start: mov edx,len ;string length [P/gM3*'
mov ecx,msg ;string start v(i Uo&Ge
mov ebx,1 ;file handle: stdout sfa'\6=O
mov eax,4 ;sys_write qpl5n'qHUc
int 80h ;kernel system call p2G8Qls
.D.Rn/
mov ebx,0 ;return value "}! rM6 h
mov eax,1 ;sys_exit {76!
int 80h ;kernel system call SOmn2
}
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x86 CPU,Windows,MASM32 ~|rkt`8p
.386 5WT\0]RUa
.model flat,stdcall ' T]oV~H
option casemap:none `?x$J
6p
;Include 文件定义 dK: "
include windows.inc e`r;`a&
include user32.inc {P&^Erx
includelib user32.lib J~q+G
include kernel32.inc dI-5%Um
includelib kernel32.lib ydQS"]\g
;数据段 16|S 0 )
.data ~-d.3A$u
szCaption db 'A MessageBox!',0 J|-HZ-Wk|J
szText db 'Hello,world!',0 sFK<:ka
;代码段 DOe KW
.code
y6}):|
start: SK52.xXJ
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 4Z}{hc\J
invoke ExitProcess,NULL F/sBr7I
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> mx~sxYa
end start d&`j8O
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AWK I?>T"nV +'
BEGIN { print "Hello, world!" } )\vHIXnfJ1
{R;M`EU>
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BASIC p'~5[JR:
传统版BASIC(例如GWBASIC): aUK4{F ;
tY=%@v'6?
10 PRINT "Hello, world!"
c^s>
20 END ,rQ)TT
x-&v|w '
或在提示符输入: r%d11[z
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?"Hello, world!":END Yj6p19
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现代版BASIC(例如Quick BASIC): 4/?}xD|?
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Print "Hello, world!" ~uadivli
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以下的语句在Quick BASIC中同样有效: % VpBB
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? "Hello,world!" 8"mW!M
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W"(`n4hi3
BCPL !m(L0YH
GET "LIBHDR" I^(#\vRW
Aq%^>YAp
LET START () BE @T1+b"TC
$( ?3TV:fx"X
WRITES ("Hello, world!*N") ?VQLY=?
$) /;6@M=6u
0WE1}.J<
?7)(qnbe"
Befunge R2THL
"!dlrow olleH">v Wx$q:$h@q
, FJ8@b
^_@ BK9x`Oo 2
'<< ~wt
Uy5 !H1u
Brainfuck %@n8
?l4
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ir:~*|
+++++++++++++++.>.+++.------.--------.>+.>. P 4*MV
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C ~49N
#include <stdio.h> /I'u/{KB
`(/saq*
int main(void) e>9Z:vY
{ Yc`j
printf("Hello, world!\n"); )kKmgtj
return 0; o Xi}@
} Du:p!nO
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An #Hb=
C++ s%[GQQ-N
#include <iostream> ywynx<Wg
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int main() 34wM%@D*c
{ t-*|Hfp*^
std::cout << "Hello, world!" << std::endl; ?4[Oh/]R
return 0; SiqX1P
} }BdVD t
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C++/CLI D`:d'ow~KQ
int main() 6$s0-{^
{ br;H8-
System::Console::WriteLine("Hello, world!"); ()M@3={R
} 7k=F6k0)
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@ Rx6 >52>
C# (C Sharp) 6w"( y~c1
class HelloWorldApp @D~+D@i$TW
{
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public static void Main() _gm?FxV:
{ n<<=sj$\!
System.Console.WriteLine("Hello, world!"); )w2K&Zr0
} J4v0O="
} gZl w
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COBOL PN"8 Y
IDENTIFICATION DIVISION. .6ngo0<g
PROGRAM-ID. HELLO-WORLD. H >:4MY
a=*ALd_&0
ENVIRONMENT DIVISION. MuoctW
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DATA DIVISION. 6L,lq;
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PROCEDURE DIVISION. hkwa ""-
DISPLAY "Hello, world!". {!}F
:~*r
STOP RUN. w^])(
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Common Lisp Q:kVCm/;
(format t "Hello world!~%") i&pJg1
>bA$SN
UiR,^/8ED
DOS批处理 r%F(?gKXkd
@echo off _+\:OB[Y
echo "Hello, world!" ,9Z2cgXwJ
nx-1*
O}MZ-/z=o~
Eiffel xY2}Wr
j,
class HELLO_WORLD Ni!;-,H+E
k%]DT.cE
creation dv'E:R(a
make =@JS88+
feature h41$|lonU%
make is Z>x7|Q3CX
local m0|Ae@g~3
io:BASIC_IO Zj1ZU[BEcL
do J3~hzgY
!!io f2 ydL/M,
io.put_string("%N Hello, world!") 0L:V#y-*
end -- make lmhbF
end -- class HELLO_WORLD 1Y=AT!"V
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Erlang -@SOo"P
-module(hello). <TR/ `
-export([hello_world/0]). my ;
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hello_world() -> io:fwrite("Hello, World!\n"). +ze}0lrEL
CF|moc:;
m<4s*q0\i
Forth V$dJmKg
." Hello, world!" CR G@!_ZM8h
g\o{}Q%X
~V2ajM1Z&O
Fortran 4=Tpi`
WRITE(*,10) .pM
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10 FORMAT('Hello, World!') Z
7s;F}=
STOP 3@^>#U
END (Qk&g"I
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HTML cBifZv*l
<HTML> ^]$$)(jw
<HEAD> -F"d0a,
<TITLE> Hello World! </TITLE> / R_ u\?k(
</HEAD> ;TL(w7vK
<BODY> 0)d?Y
<p>Hello World!</p> ^\M
dl
</BODY> ,`<^F:xl
</HTML> \|2tTvW,0
\6 \hnP
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HQ9+ oGm1d{_-O
H 7E$eN8H
Fweh =v
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INTERCAL $gVLk.
PLEASE DO ,1 <- #13 %z*29iKlI
DO ,1 SUB #1 <- #238 )A="eW_>
DO ,1 SUB #2 <- #112 9&jQ
35
DO ,1 SUB #3 <- #112 f}[H
`OF
DO ,1 SUB #4 <- #0 #P(l2 (
DO ,1 SUB #5 <- #64 +D:83h{
DO ,1 SUB #6 <- #238 99^AT*ByY
DO ,1 SUB #7 <- #26 2)wAFO6u
DO ,1 SUB #8 <- #248 lPY@{1W
DO ,1 SUB #9 <- #168 ,b4):{
DO ,1 SUB #10 <- #24 S:ls[9G[3
DO ,1 SUB #11 <- #16 9i0M/vx
DO ,1 SUB #12 <- #158 =op`fn%
DO ,1 SUB #13 <- #52 tC&fAE:S
PLEASE READ OUT ,1 U;\S(s}
PLEASE GIVE UP j]pohxn$5
.Y!;xB/
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Java Z'Kd^`mt 9
public class Hello 'pan9PW
{ [%)@|^hw91
public static void main(String[] args) NMXnrvS&
{ kg<P t >
System.out.println("Hello, world!"); "H>.':c"+3
} 0$tjNye
} ?*[\UC
~<n(y-P^
>;)2NrJV
JSP "2a$1Wmj(
<% 0Cl,8P
out.print("Hello, world!"); [s~JceUyX
%> A2y6UzLYD
q( IZJGb
:$=|7v
MIXAL - %|P
TERM EQU 19 the MIX console device number *z q .C
ORIG 1000 start address .eo~?u<j&
START OUT MSG(TERM) output data at address MSG ^IBGYl5n
HLT halt execution "OO96F
MSG ALF "MIXAL" U^[<
ALF " HELL" %y>+1hakkX
ALF "O WOR" =_[2n?9y
ALF "LD " ~L bS~_\C=
END START end of the program O#Z/+\U
-I ?z-?<D
Y]N~vD
Nuva }|Uj"e
<..直接输出..> t05_Px!mW
Hello, world! /}Yqf`CZy
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<..或者..> &y70
s2%V4yy%
<. 8h|M!/&2
// 不带换行 `mzb(bE
? "Hello, world!" 5SUN.%y
r}
Lb3`'
// 或者 /HkFlfPd
bni)Qw
// 带换行 Pp+~Cir
?? 'Hello, world!' g<$. - g
.> (?\?it-
o~#f1$|Xn
0x@A~!MoP
OCaml S ZlC4=6c
let main () = 1Dq<{;rWb
print_endline "Hello world!";; bhD ~4Rz
Ry z?v<)h
+3;Ody"59
Pascal %ISq>A)%
program Hello; } B0sC%cm
begin rfs (#
writeln('Hello, world!'); GP+2/D
end. TnNWO+kg
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.k@^KY
Perl gfde#T)S
#!/usr/local/bin/perl ?`"n3!>bS
print "Hello, world!\n"; '. (~
H<`\bej,
&vkjmiAS
PHP ;L~p|sF
<?php i@5)`<?
print("Hello, world!"); 537?9
?> r<c #nD~K
:"<e0wDu[
@'i+ff\
Pike M+poB+K.
#!/usr/local/bin/pike <~{du ?4n
int main() *%\mZ,s"
{ S/4r\6
write("Hello, world!\n"); @vRwzc\
return 0; ]78!!G[`
} /[K_
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