学生管理系统设计，每个学生是一条记录，包括姓名、学号、性别、出生年月、专业、班级、家庭地址、宿舍号码等。系统要求实现以下功能：

（1）、录入功能：从文件中录入学生信息（包括学生学号、姓名、性别、出生年月、专业等）；

（2）、保存功能：在查找，删除，插入，排序等操作完成后，对文件进行保存。

（3）、显示功能：完成学生记录的显示。

（4）、查找功能：完成按学号、姓名查找学生的相关记录，并显示。

（5）、插入功能：根据学生学号、姓名进行插入。

（6）、删除功能：根据学生学号、姓名进行删除。

（7）、排序功能：根据学生学号、姓名首字母、学科首字母进行排序。

-Student management system design, is a record of each student, including name, student number, gender, date of birth, profession, class, home address, dormitory numbers. System requirements to achieve the following functions: (a), entry features: student information input from a file (including student student number, name, sex, date of birth, profession, etc.)　(2), save function: In the search, delete, insert , sorting operation is completed, the file to be saved. (3), display: complete student records show. (4), search function: Completed by student number, name lookup student' s relevant records and displays. (5), insert function: According to the students to learn numbers, names to insert. (6), delete function: According to the students to learn numbers, names to be deleted. (7), sorting: According to students to learn numbers, initials, initials disciplines sort.