4. Develop an object-oriented program in C++ to prepare the mark sheet of an university examination with the following items read from the keyboard:
Name of the student Roll number Subject name Subject code Internal marks External marks
Design a base class consisting of the data members such as name of the student, roll number and subject name. The derived class consists of the data members, viz. subject code, internal marks and external marks.
Your program should have the facilities as listed in 1(b).