使用VC设计一个学籍管理系统。写出需求分析（记录学生学号， 姓名，班级，课程编号，课程成绩，并可按学号进行成绩查询等功能-Use VC to design a school management system. Write a needs analysis (recorded students learn number, name, class, course number, course grade, student number and may function to query res