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, teachers can add, delete, search, modify student information and grades, students can only view the results and modify personal information