一个通讯录管理系统,分为录入、查询、修改、删除、退出几部分。 先将通讯录中的资料读入结构体变量中,以便查询等操作 录入名字、地址、电话、电子邮箱、QQ号码-An address book management system, is divided into input, query, modify, delete, withdraw from the several parts. First reading of the a