liping5.asm

(1)编写分支结构.asm文件实现: 键盘输入以‘$’为结束符的长度不超过80的字符串（含字母、数字、其他字符）

data segment
  string db "woksdfkllk",10,13,'$'
  n	 db 0
data ends
code segment 'code'
     assume ds:data,cs:code
begin:	   mov ax,data
	   mov ds,ax
	   mov cx,n-string
	   lea bx,string
again:	   cmp byte ptr[bx],24h
	   je  next2
	   mov al,byte ptr[bx]
	   and [bx],al
	   jp  next1
	   or  byte ptr[bx],80h
	   inc n
next1:	   inc bx
	   loop again
next2:	   mov ah,4ch
	   int 21h
code	   ends
	   end begin