“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。 $gsn@P>"
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 )NeI]p
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以下是用不同语言写成的Hello World程序的几个例子: AP=mj
Ada %;UEyj
with Ada.Text_Io; use Ada.Text_Io; 2.=3:q!H<%
procedure Hello is rA9BY :N@
begin (\
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Put_Line ("Hello, world!"); dQ97O{O:i
end Hello; KsM2?aqwf_
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汇编语言 41y}n{4n8
k'uN2m
x86 CPU,DOS,TASM 5_U3Fs
MODEL SMALL vmI]N
IDEAL _5I" %E;S
STACK 100H }
FcWzi
|
fAt[e _E
DATASEG 4ed+'-"m
HW DB 'Hello, world!$' %C*oy$.
PJu)%al
CODESEG yZ t}Jnv
MOV AX, @data kN9pl^2
MOV DS, AX K8y/U(@|D
MOV DX, OFFSET HW =T$-idx1l
MOV AH, 09H k36%n
*4
INT 21H >&h#t7<
MOV AX, 4C00H K29]B~0%E
INT 21H 4C2J yP3
END
^|DI9G(Bs
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3 }Z[d
x86 CPU,GNU/Linux,NASM (KaP=t}
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). V.PbAN
;Enter this into "hello.asm" then type: o0Qy?14T-
;"nasm -f elf hello.asm" T$/6qZew
;"ld hello.o -o hello" :_YpSw<Q
;"./hello" ,o-BJ
069
mc_`:I=
section .data ;data section declaration U@v=q9'W
msg db 'Hello World!',0AH p(UUH3%W
len equ $-msg ;string length p{7"a
n|F$qV_p\
section .text ;code section declaration w~>V2u_-
global _start ;entry point (start of execution) gc@,lNmi
_start: mov edx,len ;string length IH?.s
k
mov ecx,msg ;string start =BpX;n<
mov ebx,1 ;file handle: stdout kBd #=J
mov eax,4 ;sys_write T!eb=oy
int 80h ;kernel system call Jq) !)={
;Dg8>
mov ebx,0 ;return value ETe,RY
mov eax,1 ;sys_exit /7X:=~m
int 80h ;kernel system call CN0&uyu#4
/!,>P[Vx
S2/c2
x86 CPU,Windows,MASM32 |S#)[83*3
.386 O G#By6O
.model flat,stdcall DzX5_ kA
option casemap:none c,;-[sn
;Include 文件定义 z-nhL=
include windows.inc S5]rIcM
include user32.inc s<x2*yVUA
includelib user32.lib ?}y?e}y*xZ
include kernel32.inc uN V(r"
includelib kernel32.lib ipfiarT~)
;数据段 \:C@L&3[
.data 6JBE=9d-Q
szCaption db 'A MessageBox!',0 I0oM\~#
szText db 'Hello,world!',0 Ro`Hm8o/
;代码段 nb0V~W
.code qCOe,$\1/
start: G@b|{!
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK bWAhK@epI
invoke ExitProcess,NULL knZee!FA7
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> g&;:[&%T]
end start "Q]`~u':
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3=V79&
AWK NK'awv),pM
BEGIN { print "Hello, world!" } iO4YZ!
DOiL3i"H
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BASIC N8;/Zd;^
传统版BASIC(例如GWBASIC): rmutw~nHD
!q!.OQ
10 PRINT "Hello, world!" 1t/#ZT!X/
20 END & D4'hL3
%{s<h6{R
或在提示符输入: =xFw4D9
62Yi1<kV@
?"Hello, world!":END 9r!psRA:`)
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现代版BASIC(例如Quick BASIC): EX UjdJs"
5
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Print "Hello, world!" W\gu"g`u
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以下的语句在Quick BASIC中同样有效: ]Ow
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? "Hello,world!" 6!])\Ay
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J<BBM.^]
BCPL b_@MoL@A!
GET "LIBHDR" dM8`!~#&PI
w$4fS
LET START () BE }7E2,A9_"
$(
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WRITES ("Hello, world!*N") !},_,J~(|
$) 0|n1O)>J
0dA'f0Uy\X
77"'?
Befunge 5O<7<OB
"!dlrow olleH">v E\&~S+:Xp
, gq4le=,v
^_@ /<)A!Nn+F
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Gb.r!W8
Brainfuck Va>~7
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< _oxhS!.*
+++++++++++++++.>.+++.------.--------.>+.>. 6hQ?MYX
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C Q.Tn"rE|
#include <stdio.h> 8R}CvzI
NL%5'8F>,
int main(void) FP=%e]vJ
{ sA=WU(4^
printf("Hello, world!\n"); =b2/g[
return 0; #Q}`kFB`
} 4%
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0L1NZY^!
C++ oF[l<OY4
#include <iostream> O`R@6KG
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int main() ={y Mk
{ @w|'ip5@
std::cout << "Hello, world!" << std::endl; dBkw.VOW
return 0; u*0Ck*pZ
} OI</o0Ca
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C++/CLI Ge=+0W)&
int main() (<!Yw|~
{ jC7`_;>=
System::Console::WriteLine("Hello, world!"); 9q;n@q:29
} "pGSz%i-
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3(l^{YC+[7
C# (C Sharp) d[ (KgX9
class HelloWorldApp 6jT+kq)
{ aj;OG^(!2_
public static void Main() F@
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{ R@Ch3l@
System.Console.WriteLine("Hello, world!"); O+hN?/>v
} ^Rriu $\
} H7!j5^
A]^RV{P
L5 ~wX
COBOL U1!6%x
IDENTIFICATION DIVISION. s
8O"U%
PROGRAM-ID. HELLO-WORLD. :^7/+|}9p
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ENVIRONMENT DIVISION. W=j
H.#<&5f
DATA DIVISION. R@_i$Df|
c+P.o.k;
PROCEDURE DIVISION. K1]m:Y<
DISPLAY "Hello, world!". Obwj=_+upd
STOP RUN. f/Cf2
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Tov !X8p
S{_i1'
Common Lisp V4kt&61
(format t "Hello world!~%") AdV&w: ^yf
H<bYm]a%
jt9fcw
DOS批处理 *m$P17/C
@echo off H]2cw{2
echo "Hello, world!" jinDKJ,n;
ha_&U@w
#_)<~
Eiffel QEo
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class HELLO_WORLD Jb+cC)(
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creation rbfP6t:c3
make "i3wc&9!?W
feature ^]_[dqd
make is z&x
^Dl
local 62{(i'K
io:BASIC_IO \D
Oq x
do =y)e&bj
!!io ? I7}4i7
io.put_string("%N Hello, world!") >S\D+1PV
end -- make
fX"cQ&
end -- class HELLO_WORLD %dA6vHI,
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RJ+i~;-
Erlang @,btQ_'X
-module(hello). oNW5/W2e;
-export([hello_world/0]). vhe[:`=a
i> }P V
hello_world() -> io:fwrite("Hello, World!\n"). i}d^a28
a'3|EWS
?
K1i@.`na/$
Forth B.)!zv\{
." Hello, world!" CR 53>y<
tS|gQUF17
DbDi n
Fortran \C<|yD
WRITE(*,10) T \Zf`.mt
10 FORMAT('Hello, World!') |^: A,%>
STOP ,T:Uk*Bj
END PtP{_9%Dz
i|5.DhK}
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HTML )?es3Ehqq
<HTML> jhU'UAn
<HEAD> Vqr#%.N
<TITLE> Hello World! </TITLE> `xb\)
</HEAD> r57CyO
<BODY> k'H+l]=
<p>Hello World!</p> `v;9!ReZV
</BODY> ,ddoII
</HTML> ;h|zNx0
!h\>[ O
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Pr&O9
INTERCAL 2VB|a;Mo
PLEASE DO ,1 <- #13 ^g^R[8
DO ,1 SUB #1 <- #238 "gaurr3
DO ,1 SUB #2 <- #112 $hND!T+;
DO ,1 SUB #3 <- #112 'IVNqfC)u
DO ,1 SUB #4 <- #0 >ucVrLm,X
DO ,1 SUB #5 <- #64 0^l)9zE
DO ,1 SUB #6 <- #238 OPi><8x
DO ,1 SUB #7 <- #26 c*fMWtPp
DO ,1 SUB #8 <- #248 d2cslDd
DO ,1 SUB #9 <- #168 D jzHEqiH
DO ,1 SUB #10 <- #24 H> Y0R
DO ,1 SUB #11 <- #16 FBDRb J
su
DO ,1 SUB #12 <- #158 F?h{IH
f
DO ,1 SUB #13 <- #52 {0~ Sj%Ze
PLEASE READ OUT ,1 >"Tivc5
PLEASE GIVE UP
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)(^L*
Java |r|<cc#
public class Hello T;?=,'u
{
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public static void main(String[] args) d'bAM{R>
{ aXOW +$,
System.out.println("Hello, world!"); f}1B-
} hmijp1u
} cD&Q