教师用的学生成绩登记系统，可添加删除修改学生成绩，或大批量修改成绩，还可以现实学生信息，按成绩排名。- save the data to the hard disk，create the information of the students，display the information of the students，search for the students according to their ID number or name,add or remove the information of a single student,modify the score of a student,add the information of multiple students,exit this program, and help to get message.display the information of all the students in increasing order of their score.