“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。 <Sz9: hg-
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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》。 pRC#DHcHh
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以下是用不同语言写成的Hello World程序的几个例子: !l'Zar
Ada 2-$R@
SVy
with Ada.Text_Io; use Ada.Text_Io; 0Vg8o @
procedure Hello is $lO\eQGxB
begin z.QW*rW9
Put_Line ("Hello, world!"); }%VHBkuc
end Hello; IRpCbTIXK
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汇编语言 7QQnvoP
hVd63_OO
x86 CPU,DOS,TASM QPBf++|
MODEL SMALL &=f%(,+
IDEAL KVK@Snn
STACK 100H ~ WVrtY Ju
V482V#BP
DATASEG jildiT[s
HW DB 'Hello, world!$' 5bgx;z9
l!`m}$
CODESEG Q 5Ln'La$
MOV AX, @data d~.#K S
MOV DS, AX A0'Yfuie
MOV DX, OFFSET HW EB)0 iQ
MOV AH, 09H u!t'J+:
INT 21H RlpW)\{j?
MOV AX, 4C00H `/0FXb
8h
INT 21H -`rz[";n
END ](%-5G1<
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x86 CPU,GNU/Linux,NASM S:Hg
=|R
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 9X!OQxmg
;Enter this into "hello.asm" then type: $PNR?
;"nasm -f elf hello.asm" Wt_@ vs@.O
;"ld hello.o -o hello" {Bu^%JEn
;"./hello" >ztv3^w
A H`6)v<f
section .data ;data section declaration uYV#'%
msg db 'Hello World!',0AH ).k=[@@V
len equ $-msg ;string length p`Ax)L\f
M*%iMz
section .text ;code section declaration nL\BB&
global _start ;entry point (start of execution) [^aow-4z
_start: mov edx,len ;string length 4O2O0\o:
mov ecx,msg ;string start ,;UVQwY
mov ebx,1 ;file handle: stdout Qp{{OjD
mov eax,4 ;sys_write ~~>D=~B0'
int 80h ;kernel system call >YD?
pDPb/
"MlY G6
mov ebx,0 ;return value [03Aej
mov eax,1 ;sys_exit 1XwbsKQ}
int 80h ;kernel system call x#'#
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x86 CPU,Windows,MASM32 vX&Nh"0H&
.386 EFV'hMjS)
.model flat,stdcall ?FD^S~bz-
option casemap:none {]`O $S
;Include 文件定义 $dq
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include windows.inc e3&R3{
include user32.inc Rs7=v2>I
includelib user32.lib &d=j_9
include kernel32.inc YMC*<wXN
includelib kernel32.lib c}lUP(Ss
;数据段 F?TAyD*
.data W,}C*8{+
szCaption db 'A MessageBox!',0 wQDKv'zU1
szText db 'Hello,world!',0 |6$6Za]:
;代码段 mI@]{K}Q%
.code L=
hPu#&/
start: @MTm8E6au
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ,LX]
invoke ExitProcess,NULL RY/9Ku `
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> zaa>]~g .
end start mm'Pe4*
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BEGIN { print "Hello, world!" } E\ 5t&jZr
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