li5.asm

本程序是汇编语言的一些基本功能的组合

code segment
 assume cs:code
main proc far
start:
 push ds
 sub ax,ax
 push ax
 
 mov cl,0 
 
 mov ah,1 
xh: 
 int 21h
 
 cmp al,0dh
 je disp
 
 cmp al,'(' 
 jne done 
 inc cl 
done:
 cmp al,')'
 jne xh 
 dec cl
 jmp xh

disp: 
 mov ah,2  
 mov dl,'Y'
 cmp cl,0
 je exit
 mov dl,'N'
exit:
 int 21h
 ret
main endp
code ends
 end start