Write a program that lets the user perform arithmetic operations on fractions. fractions are of the form a/b, where a and b are integers and b is not equal to 0. your program must be menu driven, allowing the user to select the operation (+, - *, or /) and input the numerator and denominator of each fraction. furthermore, your program must run until the user quits and must consist of at least the following functions:

menu: this function informs the user about the program's purpose, explains how to enter data, how to quit and allows the user to select the operation.

addfractions: this function takes as input four integers representing the numerators and denominators of two fractions, adds the fractions, and returns the numerator and denominator of the result.

subtractfractions: this function takes as input four integers representing the numerators and denominators of two fractions, subtracts the fractions, and returns the numerator and denominator of the result.

multiplyfractions: this function takes as input four integers representing the numerators and denominators of two fractions, multiplies the fractions, and returns the numerator and denominator of the result.