prog5_23.asm

汇编语言-王爽 源代码 加 卜艳萍版源代码

data  segment
      stud  record num:4,sex:1,age:6,home:5
      array  stud  50 dup(< >)
      count  db  0
data  ends
code  segment
      assume  cs:code,ds:data
start:push  ds
      mov  ax,0
      push  ax
      mov  ax,data
      mov  ds,ax
      mov  ch,30
      mov  bx,offset array
next: mov  ax,[bx]
      test ax,mask sex
      jz  next1
      mov  cl,age
      mov  dx,mask age
      and  ax,dx
      shr  ax,cl
      cmp  al,20
      jl  next1
      inc  count
next1:add  bx,2
      dec  ch
      jne  next
      ret
code  ends
      end  start