设计一个通讯录管理，包括通讯录链表的建立、通讯者的插入、通讯者的删除、通讯者的查询以及通讯录表的输出等。

2）基本要求

a.菜单内容

程序运行后，给出6个菜单项的内容和输入提示：

1.通讯录链表的建立

2.通讯者结点的插入

3.通讯者结点的查询

4.通讯者结点的删除

5.通讯者结点的输出

6.退出管理系统

请选择：0---5

b.基本要求

使用数字0-5来选择菜单项，其他输入则不起作用。

-Design a contact management, including the establishment of contacts list, communication' s insert, delete those communications, communications, inquiries and contacts table are the output and so on. 2) The basic requirements for the contents of program running a. menu, given the content of 6 menu items and input prompts: 1. Address book lists the establishment of 2. Communication by the insertion node 3. Correspondents query node 4. Communication Remove those nodes 5. correspondents output node 6. exit management system :0--- 5 b. Select the basic requirements to use to select the menu item numbers 0-5, the other input is not working.