班级花名册维护 要求能够增加、删除、修改学生的信息。程序能够读入一个班级花名册或是自建一个班级花名册。对一个班级的任何学生的修改操作最后都应该反映在保存在硬盘上的班级名册中。-Class roster maintenance requirements to add, delete, modify student information. Program can read a class roster or the roster of a class self. Of a class of students of any changes to the final operation should be reflected in the stored on the hard drive in the class roster.