类的继承

user

-char passport-char key -int  money-char pkey

+void Register()+bool entry()+bool passkey()+void information()+void deposit()

operate

-food F[20]-int fnum[20];

+void welcome()+void user_welcome()+void master_welcome()+void order_welcome()+void setfood()+void deletefood()+void changefood()+void addfood()+void showfood() +void orderfood()+void order_changefood()+void order_addfood()+void order_deletefood()+void showorder()+void pay()+void history()+void evaluate()

food

-int  num-int  price -char  name[20]

+friend operate +friend User