设计一个实用的小型学生管理程序，其主要功能是输入学生的学号、姓名对其进行存储，在存储后可以对学生的成绩按学号和姓名进行查寻。系统应具有存贮学生资料，按学号、姓名查询，列出学生成绩和统计功能。必须使用面向对象方法进行设计-A small student to design a practical management procedures, its main function is to enter the school number of students, name and store them in the store after the performance by the students can learn the names and numbers to search. Student Information System should be stored, according to Student ID, name, query, lists student performance and statistical functions. Must use the object-oriented approach to design