汇编 用10号功能把输入的数倒过来输出

data segment
buf db 100,101 dup(0)
buf1 db ‘qing shu ru’,13,10,'(ge shu zai 100 yi nei)=’,’$’
data ends
code segment
     assume  ds:data,cs:code
main:mov dx,data
     mov ds,dx
     lea dx,[buf1]
     mov ah,9
     int 21h
     lea dx,[buf]
     mov ah,10
     int 21h
     mov bh,0
     mov bl,[buf+1]
     lea SI,[buf+2]
     lea di,[buf+1]

    add di,bx
     mov [buf+2+bx],’$’
     mov ax,bx
     mov bl,2
     div bl
     mov cl,al
     mov ch,0
lab:
     mov al,[di]    
     mov bl,[si]
     mov [di],bl
     mov [si],al
     dec di
     inc si
     loop lab    

     mov ah,2
     mov dl,10
     int 21h
     mov dl,13
     int 21h
     lea dx,[buf+2]
     mov ah,9
     int 21h
     mov ax,4c00h
     int 21h
code ends
     end main