بفرمايين
;---------------data segment------------
dat segment
x dw 8888h
y dw 4444h
z dd 0
s1 db 'enter oprand(+,-,*,/):','$'
s2 db 'error input', '$'
s3 db 'prss a key to exit...' , '$'
ends
;-------------stack segment-------------
stk segment
dw 20 dup(?)
ends
;-------------cod...