学生档案系统

主类StudentManager

录入界面StudentSituation，进行学生的登陆

查询界面Inquest ，查询已有的学生

修改界面ModifySituation，修改已有的学生的界面

删除界面Delete，删除学生的界面

学生对象Student-students file system type StudentManager main input interface StudentSit uation, students landing Query Interface Inquest. The inquiry has been revised interface ModifySituation students, revisions of the existing interface of students delete interface Delete, delete the students students object interface Student