为班级创建一个同学通讯录管理程序，每个同学的数据应有：学号，姓名，出生年月日，手机号，家庭住址，电子邮件，以文件的方式保存用户录入的通讯录数据，供用户查询和使用通讯录信息。

　　程序应提供如下功能：录入，删除，修改，查找（可查学号，可查姓名），列表显示。

　　要求初始有文本菜单可供选择相应功能。-Students for the class to create a contact management program, each student should have the data: student number, name, date of birth, phone number, home address, e-mail to document the way to save the user' s address book data entry for user queries and use of address book information. Program should provide the following functions: input, delete, modify, search (available on the Student ID, you can check the name), the list shows. The initial requirements for a text menu to select the appropriate function.