该程序是用C语言编写的学生成绩管理系统，可以完成的操作有查询、删除、插入、修改，程序分两个界面，老师登录与学生登录，可以完成的操作权限不同-The program is written in C language student achievement management system, the operation can be completed inquiries, delete, insert, modify the program in two interfaces, the teac