设计一个个人物品管理程序，该程序具有如下功能：

(1)用户登录：输入用户名和密码，密码正确才允许登录。

(2)录入个人物品信息；

(3)给定物品名或编号，修改该物品信息；

(4)给定物品名或编号，删除该物品信息；

(5)根据输入的物品名或编号，显示查找到的相应物品信息；

(6)根据输入的分类，显示该分类的所以物品信息；

(7)根据输入的时间，查询过期或三个月内将过期的物品信息；

(8)统计功能：统计各分类飞物品。

-Design a personal belongings management program, the program has the following functions: (1) user login: enter your user name and password, the password is correct before allowing login. (2) entry of personal belongings information　(3) (4), modify the information of the item given the item name or number　given item name or number, delete the items of information　(5) The name or number of input items to display find the appropriate items of information　(6) according to the input classification, showing the classification of items of information　(7) According to the time of input, query expired or will expire within three months of items of information　(8) statistical functions: statistical classification fly items.