学生信息管理系统，没有界面，C语言编写，具有密码登入，学生成绩查看与老师管理权限分开,老师可以添加、删除、查找、修改学生信息与成绩，学生只能查看成绩与修改个人信息-Student information management system, there is no interface, C language, with password, check with the teacher student achievement management authority separately, tea