用控制台编写的学生成绩管理系统，涉及文件操作和数据管理，还有排序、插入、删除等链表里的操作。采用的是一个双重链表结构。-Prepared by the console student achievement management system, involving file operations and data management, as well as sort, insert, delete, etc. the list in operation. Uses a double linke