这是用C语言实现的一个简易通讯录管理系统，数据结构是用链表实现的，能够实现各种查询，修改，增删操作，还能够保存文件。非常适合C语言初学者参考学习-This is a simple address book management system implemented in C language data structure linked list, to various queries, modify, add or delete operation, and also be able to sa