学生管理系统，包括学生信息的录入，查询，修改，删除，成绩排序等等，c语言编写无误，可直接使用-Student management system, including student information input, query, modify, delete, sort, and so the results, c language correctly, can be used directly

家长在线注册,浏览学生成绩信息,和老师即时对话,管理学生成绩,系统公告管理-Parents online registration, browse the student achievement information, dialogue with the teacher instant and management of student achievement, system management