小通讯录本程序的功能是为用户提供简单的通讯录进行管理，通过该程序存储联系人信息，提供关键字（只能是英文关键字进行查找）查找功能，可以对数据进行修改、删除、添加等操作-Small address book feature of this program is to provide a simple address book for users to manage, store contact information through the program to provide keywords (English keyword search only) search function, you can modify the data, delete, Add other operations