Introduction - If you have any usage issues, please Google them yourself
University personnel class design (1) base class, person type, the attributes related to their definition (2), derived class, student class, teacher class, their own definition of the relevant property (3) Student class and the teacher is not the same class of property, the use of show polymorphism editing function, can output different types of correct information. (4) editing interface, the function (1) entry personnel (2) to remove personnel (3) save the staff (4) Enquiries staff