“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。 *=~X1s
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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》。 0ofl,mXW
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以下是用不同语言写成的Hello World程序的几个例子: Z`97=:W
Ada |@lVFEl]
with Ada.Text_Io; use Ada.Text_Io; $" `9QD~
procedure Hello is Mz:t[rfs
begin r\f|r$i
Put_Line ("Hello, world!"); }RPeAcbU_
end Hello; uL[%R2
:1(UC}v
uom~,k$|
汇编语言 /ar/4\b
_!'sj=n]q
x86 CPU,DOS,TASM 4}>1I}!k
MODEL SMALL \&)k{P>=
IDEAL |&xjuBC
STACK 100H H,5##@X
?ybX&V
DATASEG BH$+{rZ8t
HW DB 'Hello, world!$' %\n&iRwDF
j"Vb8}
CODESEG 9CW8l0
MOV AX, @data j9IeqlL
MOV DS, AX ;rJ
MOV DX, OFFSET HW 9X[}ik0
MOV AH, 09H y+ZCuX
INT 21H _Sxp|{H0
MOV AX, 4C00H },'Ij;
%%Q
INT 21H cojbuo
END 8OW504AD
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xB&6f")
x86 CPU,GNU/Linux,NASM .wv!;
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). JHCV7$RS
;Enter this into "hello.asm" then type: lS:R##
;"nasm -f elf hello.asm" :1JICxAU
;"ld hello.o -o hello" qf
qp}g\
;"./hello" |}y6U< I
5NECb4FG
section .data ;data section declaration .1 =8c\%
msg db 'Hello World!',0AH
UW/{q`)
len equ $-msg ;string length +iL,8eW
p<9e5`&I
section .text ;code section declaration Y><")% Q
global _start ;entry point (start of execution) 1>1ii
_start: mov edx,len ;string length !1M=9 ~$!
mov ecx,msg ;string start 7L=V{,,v
mov ebx,1 ;file handle: stdout ;"@FLq(n
mov eax,4 ;sys_write bk#t+tuk
int 80h ;kernel system call }hjJt,m
8*V8B=q}K
mov ebx,0 ;return value uVBMI.&w
mov eax,1 ;sys_exit ->S6S_H/+&
int 80h ;kernel system call EjYCOb-
M+N7JpR
k-M-=VvA
x86 CPU,Windows,MASM32 b[I;6HW
.386 2r]!$ hto
.model flat,stdcall <Gr775"
option casemap:none }nW) +
;Include 文件定义 ,UD,)ZPf[
include windows.inc }ST0?_0F*
include user32.inc yv!,iK9
includelib user32.lib ^9Je8 @Yu
include kernel32.inc "[LSDE"(
includelib kernel32.lib cKj6tT"=O
;数据段 [Bz'c1
.data H@8g 9;+
szCaption db 'A MessageBox!',0 UkY
`&&ic