这是一个用C语言写的学生成绩管理系统，主要涉及文件操作，可以实现对学生成绩文件的读取和保存，以及对学生成绩进行排序和统计。-This is a student performance management system written in C language, mainly involving file operations, you can achieve to read and save files on student achievement, and the sort of stud