assembly - 乘法后如何加法

Question

所以我想在哪里做一个收据输出（收据 = 收据 + foodtotal）。有什么建议么？

foodchoice db 0

foodtotal db 0

foodqty db 0

receipt db 0

...

...

@foodcalculate:        

        mov bl, foodchoice
        mov al, foodqty
        mul bl
        aam


        mov foodtotal, al
        mov cx, ax
        add ch, '0'
        add cl, '0'  

        mov ah, 00          ;clear screen
        mov al, 02
        int 10h 
        lea dx, foodprice 
        mov ah, 9
        int 21h


        mov ah, 2
        mov dl, ch
        int 21h               
        mov dl, cl
        int 21h


@receipt:
        ; receipt code goes from here :(

标签： assemblytasm