a. Construct a class named Fractions containing two integer data members named num and denom, used to store the numerator and denominator of a fraction having the form num/denom. Your class should include a default constructor that initializes num and denom to 1 and four operator functions for adding, subtracting, multiplying, and dividing the two fractions, as follows:
Your class should have input and output functions for entering and displaying a fraction.
b. Include the class written for Exercise 11a by including it in a working C++ program that can be used to test each of the class's member methods.