简单分支程序设计实验

1.编写程序，计算下面函数的值并输出。

TITLE Program Template (Template.asm)
; Template for Win32 Console Application
; Program Description:
; Author:
; Creation Date:
; Revisions:
; Last update: 09/01/2009 Modified by:

include io32.inc
.data

; (insert variables here)
x byte ?
array byte 'enter x:',0
.code
main proc

; (insert executable instructions here)

mov eax,offset array ;字符串首地址送eax
call dispmsg ;调用子程序dispmsg显示字符串
call readsid
cmp eax,0
jl two ;表示有符号中 <
cmp eax,10
jle three ;表示有符号中 <=
jmp four

two: mov x,2
imul x
jmp msg
three:
mov x,3
imul x
jmp msg
four:
mov x,4
imul x
jmp msg

msg: call dispsid ;表示有符号输出
ret ;返回操作系统
main endp

; (insert additional procedures here)

end main

;end of assembly