“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。 /$=<"Y7&g
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 oE.59dx
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以下是用不同语言写成的Hello World程序的几个例子: G2y`yg
Ada "h`oT4j5q
with Ada.Text_Io; use Ada.Text_Io; Kj{(jT
procedure Hello is xQ0.2[*5
begin B?gFFU61
Put_Line ("Hello, world!"); rgw@
end Hello; EGMIw?%Y`-
jY1^I26E
uB1>.Pvxb
汇编语言 b2r]>*Vc
|L<p90
x86 CPU,DOS,TASM Da3Z>/S
MODEL SMALL VFI\2n`
IDEAL h1
npaD!
STACK 100H I<+i87=
EA``G8Vn>
DATASEG xg;I::hE7X
HW DB 'Hello, world!$' FQh8(^(
t9eEcqMg
CODESEG H.)Y*zK0.
MOV AX, @data ;O~k{5.iS
MOV DS, AX T
B(K&3_D
MOV DX, OFFSET HW dJ(<zz+;b
MOV AH, 09H ]8+ D
INT 21H <L'6CBbP
MOV AX, 4C00H $<da<}b
INT 21H "$krK7Z
END )&{<gyS1
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roM!%hb
x86 CPU,GNU/Linux,NASM 93VbB[w~7F
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). J?%e cCN
;Enter this into "hello.asm" then type: w.o>G2u
;"nasm -f elf hello.asm" 8= "01
;"ld hello.o -o hello" ^JMO POm
;"./hello" 7R7e3p,K
6>NK2} `
section .data ;data section declaration ){I!orQ
msg db 'Hello World!',0AH "$#<+H>O
len equ $-msg ;string length A4{p(MS5
91\Sb:>
section .text ;code section declaration oJ.5! Kg
global _start ;entry point (start of execution) +mRc8 G
_start: mov edx,len ;string length Wl0p-h
mov ecx,msg ;string start mJ>msI
@
mov ebx,1 ;file handle: stdout /T<))@$
mov eax,4 ;sys_write hA=}R.gi
int 80h ;kernel system call J3QL%#
i4}+n^oSYo
mov ebx,0 ;return value 9<Ks2W.N
mov eax,1 ;sys_exit k?;@5r) y-
int 80h ;kernel system call qYP;`L}o#
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171
]o?r(1
x86 CPU,Windows,MASM32 f=hT
o!i
.386 VOSq%hB
.model flat,stdcall z 4qEC
option casemap:none uGpLh0
;Include 文件定义 8 RA
include windows.inc Q2 Dh(
include user32.inc _$KEE|9
includelib user32.lib ,4HZ-|EOZ
include kernel32.inc "F:V$,mJ
includelib kernel32.lib 1| dXbyUd
;数据段 N c(f+8
.data \7PC2IsT3
szCaption db 'A MessageBox!',0 -&E