Consider a student registration program used by the registrar’s office. The program keeps track of students who are registered for a given semester. For each student registered, the program maintains the student’s name, address, and phone number; the number of classes in which the student is enrolled; and the student’s total credit hours. The program also keeps track of the total number of registered students. Define instance and class variables of a Student class that is suitable for this program.

Suppose the minimum number and maximum number of courses for which a student can register are different depending on whether the student is a graduate, undergraduate, or work/study student. Redo Exercise 6 by defining classes for different types of students. Relate the classes, using inheritance.