Define an ADT for a Rational class, i.e. a collection of methods, class variables (if necessary) and attributes (I necessary).

Recall that a rational number is a number that can be represented as a fraction a/b, where both a, b Z and b 0. Keep it simple but define methods. Assume that we only want to create a fraction, be able to access its numerator and denominator, and to display it. Do not add addition, subtraction, etc. of fractions.

Dont forget to put brief descriptions with pre- and post-conditions.