hello world作为所有编程语言的起始阶段,占据着无法改变的地位,所有中/英/法/德/美……版本的编程教材中,hello world总是作为第一个TEST记录于书本之中,所有的编程第一步就在于此了!经典之中的经典!
hello world!
"Hello, world"程序是指在计算机屏幕上输出Hello, world这行字符串的计算机程序,“hello, world”的中文意思是“世界,你好”。这个例程在Brian Kernighan和Dennis M. Ritchie合著的The C Programming Language中被使用而广泛流行。因为它的简洁、实用,并包含了一个程序所应具有的一切,因此为后来的编程类图书的作者提供了范例,一直待续到今。
hello world程序全集
ActionScript
Ada
1 2 3 4 5 6 | with TEXT_IO;
procedure HELLO is
begin
TEXT_IO.PUT_LINE ("Hello, world!");
end HELLO;
|
汇编语言
x86 CPU,GNU/Linux,NASM
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | section .data
msg db 'Hello, world!',0xA
len equ $-msg
section .text
global _start
_start:
mov edx,len
mov ecx,msg
mov ebx,1
mov eax,4
int 0x80
mov ebx,0
mov eax,1
int 0x80
|
x86 AT&T、Gas
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | .data
msg : .string "Hello, world!\n"
len = . - msg
.text
.global _start
_start:
movl $len, %edx
movl $msg, %ecx
movl $1 , %ebx
movl $4 , %eax
int $0x80
movl $0 , %ebx
movl $1 , %eax
int $0x80
|
x86 CPU、Windows、MASM32
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | .386
.model flat,stdcall
option casemap:none
;==========================================================
include windows.inc
include user32.inc
includelib user32.lib
include kernel32.inc
includelib kernel32.lib
;==========================================================
.data
szCaption db "A MessageBox!", 0
szText db "Hello, world!", 0
;==========================================================
.code
start:
invoke MessageBox, NULL, addr szText, addr szCaption, MB_OK
invoke ExitProcess, NULL
;==========================================================
end start
|
8086操作系统
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | [BITS 16]
org 0x7c00
mov ax,cs
mov ds,ax
mov es,ax
call DispStr
jmp $;End Hear
DispStr:
mov ax, BootMessage
mov bp, ax
mov cx, 16;How long is the String
mov ax, 0x1301
mov bx, 0x000c
mov dl, 0
int 0x10
ret
BootMessage: db "Hello, world!"
times 510-($-$$) db 0x0
dw 0xaa55; Bootable Mark
|