这是一个小型的学生成绩记录薄系统，系统进去后，出现一个菜单界面，包括添加学生成绩，查询学生成绩，修改学生成绩，存储学生成绩等等7项。用户可自行选择其中的选项做相应的事情-It is a small student achievement record book system, the system into the emergence of a menu interface, including the addition of student achievement, student achievement query, modify, student achievement, student achievement, and so on seven storage. The user can　one of the options on their own to do the appropriate thing