Explain the concept of operator overloading? List the operators that cannot be overloaded. Write programs to add two object of distance class with data members feet and inch by using member function and friend function.[10]

Explain types of polymorphism briefly. Write down roles of polymorphism. How can we achieve dynamic polymorphism briefly? Write down roles of polymorphism. How can we achieve dynamic polymorphism? Explain with example.[10]

Write a program according to the specification given below:- Create a class Teacher with data members id & subject and member functions for reading and displaying data members.- Create another class Staff with data members id & position, and member functions for reading and displaying data members.- Derive a class Coordinator from Teacher and Staff and the class must have its own data member department and member functions for reading and displaying data members.- Create two object of Coordinator class and read and display their details.[10]