c语言实现通讯录

说明：  c语言实现通讯录功能： 1、 数据入录――按顺序入录学生成绩 2、 插入记录――在一个特定序号处插入一条记录 3、 删除记录――删除特定记录 4、 修改记录――修改特定记录 5、 查询记录――关键字等于确定值的简单查询；关键字的值在某一范围内的范围查询，并可作相应统计。（该大作业可对记录所在的序号进行查询） 6、 排序――按学号、姓名、出生年月、家庭住址、邮编、电话等进行排序 7、 系统维护――退出系统时关闭所有文件。
(directory functions : a data-recorded-- recorded sequentially into two student achievement, insert records-- in a specific serial number, insert a record of three, delete records-- delete specific records 4, revised record-- record five specific amendments, the records of inquiries-- keyword to determine the value of simple inquiries; keyword value in a particular area within the scope of inquiry, and could make corresponding statistics. (The largest operations of the record of the serial number where inquiries) 6, sequencing-- than the number, name, date of birth, home address, Zip, and a telephone Sort 7, system maintenance-- from the system shut down all the relevant documents.)