说明：  电话簿管理 本电话簿和每一条记录由姓名、地址、电话组成，它能够实现插入、删除、显示、修改和查询联系人电话号码等功能。而且通信人的记录存储在一个自己命名的数据文件中，方便管理。
(Telephone directory telephone directory management and each record by name, address, telephone components, it can insert, delete, display, modify, and query features such as contact telephone numbers. And communications records were stored in a naming their own data files to facilitate management.)