采用C语言开发，文件存储，指针链表实现，每个用户凭合法用户名和密码登陆，不同权限的用户可使用不同的功能集。用户管理包括：新增、查找，浏览、修改密码和和保存等基本功能。学生成绩管理包括添加、修改、删除、查询、排序、统计、载入、追加和保存等基本功能。-Using C language development, file storage, a pointer linked list implementation, each user with valid username and password, different users can use a different feature set. User management includes: add, search, browse, modify and save the password and other basic functions. Student performance management, including add, modify, delete, query, sorting, statistics, load, and save an additional basic functions.