信息检索程序设计

DATAS SEGMENT
n0 db 'Student  '
n1 db 'Teacher  '
n2 db 'Classmate'
n3 db 'Chinese  '
n4 db 'Math     '
n5 db 'English  '
n6 db 'Computer '
n7 db 'Java     '
n8 db 'C++      '
Errmsg  DB 'Please input 0-8! E or e for Exit $'  ;输出错误信息
DATAS ENDS

CODES SEGMENT
    ASSUME CS:CODES,DS:DATAS
START:
     MOV  AX,DATAS
     MOV  DS,AX

LOP: MOV  AH,01H       ;输入一个数字
     INT  21H
     CMP  AL,'E'
     JZ   exit         ;输入是否'e'或'E'则退出
     CMP  AL,'e'
     JZ   exit
      
     CMP  AL,'0'       ;输入不在0－8范围则退出
     JB   ERR
     CMP  AL,'8'
     JA   ERR