“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。 Ldu!uihx
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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》。 W{`;][
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以下是用不同语言写成的Hello World程序的几个例子: O=fT;&%.
Ada .'4*'i:
with Ada.Text_Io; use Ada.Text_Io; T F'ssD
procedure Hello is
tnsYY
begin &sW/r::,
Put_Line ("Hello, world!"); v-kH7H"z
end Hello; 0Ec -/
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P>H'od
汇编语言 c}Qc2D3*
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x86 CPU,DOS,TASM Og["X0j
MODEL SMALL uGv+c.~[j
IDEAL 9'tM65K
STACK 100H mb#)w`<
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DATASEG 4bO7rhve
HW DB 'Hello, world!$' ?;$g, 2n
DN!EsQ6
CODESEG T]:5y_4?[
MOV AX, @data `s+qz
MOV DS, AX k";;Snk
MOV DX, OFFSET HW dO=<3W
MOV AH, 09H $R^"~|m3M
INT 21H mr*zl*
MOV AX, 4C00H /f#sg7)
INT 21H a; "+Py
END 27MgwX
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x86 CPU,GNU/Linux,NASM 1q*3V8
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). sU`#d
;Enter this into "hello.asm" then type: fhC=MJ
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;"nasm -f elf hello.asm" Un<~P@T%
;"ld hello.o -o hello" 'HC4Q{b`
;"./hello" 4fN<pG,
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section .data ;data section declaration m^ILcp!
msg db 'Hello World!',0AH i^n&K:6
len equ $-msg ;string length }SYvGp{J,
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section .text ;code section declaration V'9 k;SF
global _start ;entry point (start of execution) ;%U`P8b!
_start: mov edx,len ;string length :!R+/5a
mov ecx,msg ;string start ,e;(\t:
mov ebx,1 ;file handle: stdout 3
-5^$-7_
mov eax,4 ;sys_write al5?w{us
int 80h ;kernel system call R4o_zwWgPw
/ og'W j
mov ebx,0 ;return value Fv3fad@x
mov eax,1 ;sys_exit #R)$nv:h?^
int 80h ;kernel system call !6kLg1
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x86 CPU,Windows,MASM32 <@?bYp
.386 4Iz~3fqB7
.model flat,stdcall E)`+1j
option casemap:none 8U-}%D<a
;Include 文件定义 1|zo-'y
include windows.inc ?&Lb6(}e
include user32.inc /JvNJ
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includelib user32.lib kY*D s;
include kernel32.inc C9~CP8
includelib kernel32.lib LTi0,03l<
;数据段 5VISP4a
.data GI/g@RV
szCaption db 'A MessageBox!',0 d9E:LZy
szText db 'Hello,world!',0 ua2SW(C@
;代码段 gHTo|2 Q{
.code <%|2yPb]
start: \s,ZE6dQ
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK #/YKA{
invoke ExitProcess,NULL ^Zg"`&E
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> #wt#-U;
end start ,3x3&c
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AWK t,&1~_9
BEGIN { print "Hello, world!" } x;kW }U
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BASIC A_CK,S*\,&
传统版BASIC(例如GWBASIC): Iz
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10 PRINT "Hello, world!" G6L'RP
20 END aj1Zi3h
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或在提示符输入: ,%Dn}mWu
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?"Hello, world!":END j134iVF%
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现代版BASIC(例如Quick BASIC): iEnDS@7
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Print "Hello, world!" 58WL8xu
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以下的语句在Quick BASIC中同样有效: q*52|?
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? "Hello,world!" O9jqeF`L=
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BCPL 06L/i,
GET "LIBHDR" S)p1[&" M
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LET START () BE 81`-xVd
$( ;j S~0R
WRITES ("Hello, world!*N") A[^fG_l4
$) Ub0g{
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R0AVAUG
Befunge {4\(HrGNk
"!dlrow olleH">v .t$~>e
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Brainfuck {|a=
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+++++++++++++++.>.+++.------.--------.>+.>. 6Xbo:#
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#include <stdio.h> Xb.WI\Eh
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int main(void) [O7:<co
{ tWT@%(2~0
printf("Hello, world!\n"); } U\n:@:2B
return 0; a;8q7nC
} ~{/"fTif
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C++ `2()Vf
#include <iostream> 9/'zk
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int main() *`7cvt5]IM
{ %dw@;IZ#8{
std::cout << "Hello, world!" << std::endl; fIWOo >)D
return 0; }\?UmuolQ
} EPkmBru
^
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.0}]/%al
C++/CLI tUaDwIu#
int main() PS7ta?V
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{ krnxM7y
System::Console::WriteLine("Hello, world!"); _vr>-:G
} ;Hk{bz(
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C# (C Sharp) %a$ l%8j&
class HelloWorldApp DSf
{ sT
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public static void Main() {)=h
{ ^M_0M
System.Console.WriteLine("Hello, world!"); mW-4
} AXFQd@#
} AR8zCKBc^
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COBOL dTcrJ|/Y
IDENTIFICATION DIVISION. C+tB$yahO
PROGRAM-ID. HELLO-WORLD. 2)cq!Zv
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ENVIRONMENT DIVISION. ,}?x!3
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DATA DIVISION. %s&l^&ux
JB[n]|
PROCEDURE DIVISION. f2ea|l
DISPLAY "Hello, world!". m?*}yM
STOP RUN. p(vmMWR!
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Common Lisp =cz^g^7
(format t "Hello world!~%") <MdIQ;I8
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DOS批处理 u2\QhP 9
@echo off &pCa{p
echo "Hello, world!" ;@/^hk{A
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ZMa@/\pf1
Eiffel d%?$UnQ
class HELLO_WORLD v%^"N_]
EIdEXAC(
creation ' ?tx?t
make ]40@yrc
feature CmP_9M?ce
make is VO
u/9]a
local ;[)O{%s
io:BASIC_IO gZ!q
do JO[7_*s
!!io m!#'4
io.put_string("%N Hello, world!") skeH~-`M@
end -- make 9fQ[:Hl"
end -- class HELLO_WORLD 1/\JJ\
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Erlang b;xn0sDn#
-module(hello). j3=%J5<
-export([hello_world/0]). r{g8CIwGQ
C!X"0]@FA
hello_world() -> io:fwrite("Hello, World!\n"). a)lS)*Y
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Forth Rq@M~;p
." Hello, world!" CR W*.j=?)\[
>a%C'H.A9
ngLpiU0H&
Fortran w#qE#g %1
WRITE(*,10) /Pv
dP#!
10 FORMAT('Hello, World!') CNMcQP
STOP VPi*9(LS
END H6/n
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x<-^
HTML ks19e>'5Q
<HTML> 'Bx"i
<HEAD> ,::f?
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<TITLE> Hello World! </TITLE> qe[P'\]L
</HEAD> H3#rFO"C*
<BODY> ?Z(xu~^/
<p>Hello World!</p> fug
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</BODY> BZP{{
</HTML> Ht4A
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INTERCAL Bcl6n@{2f
PLEASE DO ,1 <- #13
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DO ,1 SUB #1 <- #238
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DO ,1 SUB #2 <- #112 WJU[+|J
DO ,1 SUB #3 <- #112 JavSR1_
DO ,1 SUB #4 <- #0 .o(S60iH!(
DO ,1 SUB #5 <- #64 vw2yOLRX
DO ,1 SUB #6 <- #238 O&g$dK!Rad
DO ,1 SUB #7 <- #26 2%_UOEayU
DO ,1 SUB #8 <- #248 +bdjZD3
DO ,1 SUB #9 <- #168 L)"E _
DO ,1 SUB #10 <- #24 FE'F@aS\
DO ,1 SUB #11 <- #16 h?7@]&VJ
DO ,1 SUB #12 <- #158 b}HwvS:
DO ,1 SUB #13 <- #52 01w}8a(
PLEASE READ OUT ,1 4{6XZ_J1
PLEASE GIVE UP nnZM{<!hF
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Java /LC!|-1E
public class Hello wA< Fw
)
{ BTnrgs#[
public static void main(String[] args) $N/"c$50,
{ 3)*Twqt
System.out.println("Hello, world!"); L %20tm
} 8~|tl,
} 'U*Kb
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8;
JSP jM[]Uh
<% uRnSwJ"hE
out.print("Hello, world!"); ?#gYu%7DN
%> 6b-E|;"]:^
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+`&-xq76
MIXAL ?4sF:Y+\
TERM EQU 19 the MIX console device number pxV@ fH+`
ORIG 1000 start address Z(c2F]
START OUT MSG(TERM) output data at address MSG "JpnmE[`
HLT halt execution 9jf2b
MSG ALF "MIXAL" <sor;;T
ALF " HELL" snvixbN
ALF "O WOR" |PutTcjQ
ALF "LD " ~JX+4~qT
END START end of the program _ lE
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<..直接输出..> Sp\
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Hello, world! {GhM,-%e
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