“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。 btQet.
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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》。 0j$OE
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以下是用不同语言写成的Hello World程序的几个例子: Yy@g9mi
Ada ^<;w+%[MT
with Ada.Text_Io; use Ada.Text_Io; kfCKhx
procedure Hello is !K\itOEP-
begin AbZ:(+@cP
Put_Line ("Hello, world!"); evOb
end Hello; m!Af LSlwm
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汇编语言 ifrq
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x86 CPU,DOS,TASM U Um|@
MODEL SMALL \7
Mq $d
IDEAL oKiD8':
STACK 100H BD'NuI
STB-guia5
DATASEG i4VK{G~g"
HW DB 'Hello, world!$' sVoR?peQ
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CODESEG CJA+v-
MOV AX, @data #eLN1q&Z
MOV DS, AX 7TdQRB
MOV DX, OFFSET HW J@<!q
MOV AH, 09H (H-cDsh;c
INT 21H kaO{#i2-
MOV AX, 4C00H qUg9$oh{LI
INT 21H \n(ROf^'
END 2Oi' E
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x86 CPU,GNU/Linux,NASM %/%gMRXG2
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). kjX7- ZPY
;Enter this into "hello.asm" then type: H9E(\)@
;"nasm -f elf hello.asm" + !xu{2 !
;"ld hello.o -o hello" xFX&9^Uk
;"./hello" |hD~6a
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section .data ;data section declaration EW9b*r7./
msg db 'Hello World!',0AH 0Jg+sUs{
len equ $-msg ;string length _XWnS9
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section .text ;code section declaration .5z&CJDiIi
global _start ;entry point (start of execution) @E(P9zQ/zy
_start: mov edx,len ;string length Pl?}>G
mov ecx,msg ;string start z \^
mov ebx,1 ;file handle: stdout dFMAh&:>
mov eax,4 ;sys_write ?V?<E=13
int 80h ;kernel system call l# BZzJ?~
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mov ebx,0 ;return value vlAy!:CV
mov eax,1 ;sys_exit ]Y =S
int 80h ;kernel system call M#T#:wf~
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x86 CPU,Windows,MASM32 UI_v3c3b
.386 zg)|rm
.model flat,stdcall dXDXRY.FMQ
option casemap:none 01o [!n T
;Include 文件定义
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include windows.inc MU*It"@}2
include user32.inc ,A?{~?u.
includelib user32.lib ~Q0&P!k
include kernel32.inc #XfT1
includelib kernel32.lib ILNXaJ'0a
;数据段 s4N,^_j
.data '?b\F~$8
szCaption db 'A MessageBox!',0 A`g.[7
szText db 'Hello,world!',0 oHk27U G
;代码段 <oQ6 Z X
.code IBDVFA
start: lZBv\JE
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK !9PX\Xbn
invoke ExitProcess,NULL 1j+eD:d'
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 1S&0
end start :Nkz,R?
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BEGIN { print "Hello, world!" } HMhLTl{;
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BASIC 'Z y{mq\
传统版BASIC(例如GWBASIC): ZrA
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:ET x*c
10 PRINT "Hello, world!" o16d`}/<
20 END oH=4m~'V
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或在提示符输入: 3|jn,?K)N
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?"Hello, world!":END NWeV>;lh9
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现代版BASIC(例如Quick BASIC): UC.8DaIPN
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Print "Hello, world!" FXcc1X/
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以下的语句在Quick BASIC中同样有效: [1e.i
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? "Hello,world!" zI(xSX@
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GET "LIBHDR" K6ciqwUO
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LET START () BE gh.w Li$+
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WRITES ("Hello, world!*N") dvC0 <*V
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Befunge /5&3WG&<u
"!dlrow olleH">v lp?i_p/z
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C Z|V"8jE
#include <stdio.h> ^vYVl{$bT
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int main(void) Xw&QrTDS`
{
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printf("Hello, world!\n"); 6-)7:9y
return 0; |Ba4 G`
} ho?|j"/7
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C++ ykErt%k<n
#include <iostream> "`gf y
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int main() x@{G(W:W
{ ]>]#zu$=c
std::cout << "Hello, world!" << std::endl; <~IH`
return 0; "Nk=g~|
} WZ-4^WM=!
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C++/CLI =:t@;y
int main() ):|G
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{ l8hvq(,{
System::Console::WriteLine("Hello, world!"); SX1Fyy6
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} ;o~+2Fir
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C# (C Sharp) ZuF4N=;
class HelloWorldApp ,d9%Ce.$2
{ ,H#qgnp
public static void Main() !`O_VV`/@
{ ZNL;8sI?>
System.Console.WriteLine("Hello, world!"); 89:?.'
} V7KtbL#
} } kh/mq
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COBOL .,d$%lN
IDENTIFICATION DIVISION. D@sx`H(
PROGRAM-ID. HELLO-WORLD. IGF37';;
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ENVIRONMENT DIVISION. -Y
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DATA DIVISION. _.Z&<.lJ
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PROCEDURE DIVISION. \gJapx(
DISPLAY "Hello, world!". IgHs&=
STOP RUN. a@S4IoBg%
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Common Lisp j]ln
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(format t "Hello world!~%") yp^[]Mz=
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DOS批处理 H8o%H=I%
@echo off \KnD"0KW
echo "Hello, world!" 1K*f4BnDr~
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w ;s ]n
Eiffel 6ljRV)
class HELLO_WORLD vhE}{ED
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creation G\,A> mT/P
make H[_uVv;}6
feature Fy(nu-W
make is \{+nXn
local B;D:9K
io:BASIC_IO Fl 'xmz^
do }Nd`;d
!!io S\{^LVXTMd
io.put_string("%N Hello, world!") b0z{"
end -- make [ilv/V<
end -- class HELLO_WORLD Z.Y;[Y
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Erlang hOrk^iYN=
-module(hello). +N(YR3
-export([hello_world/0]). ]\9B?W(#
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hello_world() -> io:fwrite("Hello, World!\n"). XB!`*vZ/<
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Forth m^oi4mV
." Hello, world!" CR lJ>QTZH!wW
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sh))[V"8
Fortran d;jJe0pH
WRITE(*,10) Bg+]_:<U
10 FORMAT('Hello, World!') 6t mNfI34
STOP C+#;L+$Gi
END LN3dp?;_{
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HTML w<F;&';@h
<HTML> 'B<qG<>
<HEAD> 18w^7!F?~u
<TITLE> Hello World! </TITLE> ao";5m
</HEAD> ,,H$>r_;
<BODY>
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<p>Hello World!</p> m)]fJ_
</BODY> /HJ(Wt
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</HTML> R#Nd|f<
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INTERCAL qpwh #^2
PLEASE DO ,1 <- #13 {7~ $$AR(
DO ,1 SUB #1 <- #238 m<'xlF
DO ,1 SUB #2 <- #112 \gzwsT2&
DO ,1 SUB #3 <- #112 dV=5_wXZ$
DO ,1 SUB #4 <- #0 z9kX`M+
DO ,1 SUB #5 <- #64 jUR#
DO ,1 SUB #6 <- #238 @G$<6CG\
DO ,1 SUB #7 <- #26 QKaj4?p$|S
DO ,1 SUB #8 <- #248 dVGUhXN6
DO ,1 SUB #9 <- #168 S{)n0/_
DO ,1 SUB #10 <- #24 ^FMa8;'o
DO ,1 SUB #11 <- #16 }:D~yEP
DO ,1 SUB #12 <- #158 F)iGD~
DO ,1 SUB #13 <- #52 e%c5OZ3~
PLEASE READ OUT ,1 k42ur)pb
PLEASE GIVE UP ?N?pe}
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