1. Write a program using C++ the value return function that can be used to compute the compound interest based on the given formula: Inputs to the functions are: n, t, a, and P Total compounded interest = P (1 + r/n) (nt) - P Where P is the principal loan amount r is the annual interest rate = a/100 n = no of times per year the interest is compounded (if monthly, them n will be 12) t = number of years the loan is borrowed for. The function should return the total compound interest. Write a program using C++ main to compute the compound interest by supplying suitable inputs and display the loan amount and the compound interest.