“简单学生成绩管理系统“所要实现的具体功能：

输入学生信息，显示所有学生信息，按成绩降序排列（按语文成绩降序排列，按数学成绩降序排列，按英语成绩降序排列，按总成绩降序排列按平均成绩降序排列）,插入学生信息，修改学生信息 ，删除学生信息，查询学生信息（按学号查询学生信息，按姓名查询学生信息，成绩统计）。

-"Simple student performance management system" to achieve the specific functions:

Input student information, show all students　information, according to results in descending order according to the language result (in descending order, press math scores descending order, according to the English achievement in descending order, press jimenez-all in descending order according to the average score in descending order), insert the students　information, modify the students　information, delete the students　information, inquires the student information (according to student id inquires the student messages, press the name query students information, achievements statistics).