说明：  每个学生信息包括：学号、姓名、籍贯。具体功能： 1、创建信息链表并以磁盘文件保存 2、读取磁盘文件并显示输出所有学生的籍贯信息 3、按学号或姓名查询其籍贯 4、按籍贯查询并输出该籍贯的所有学生 5、能添加、删除和修改学生的籍贯信息 6、显示输出广东籍和非广东籍学生的信息并可分别存盘
(Each student information, including: Student ID, name, country of origin. Specific functions: one, create a list of information and save the file to disk 2, to read the disk file and display the output of the origin information for all students to 3, according to school or the names of inquiries about their place of origin 4, according to the query and output the native place of origin of all students 5, can add, delete and modify the student)