通讯录管理：主要是建立一个通讯录，存放姓名、手机号码、地址等，

具备输入、查询、增加、修改、删除等功能。

要 求：具备菜单功能或详细的提示功能，

至少具备数据输入、输出、查询、删除、文件保存、文件读入中的两项功能。-Contacts management: the establishment of an address book, store name, phone number, address, etc.

Have input, query, add, modify, delete functions.

Requirements: a menu function or detailed prompts,

At least with the data input and output, query, delete, save the file, the file is read into the two functions