A credit company XYZ Sdn Bhd has asked you to develop a loan calculator using C++ programming language. The calculator will be used by a customer to calculate his/her loan instalment amount. The customer needs to input his/her name, address, loan amount, number of years for loan and yearly interest rate. Based on the input the calculator will calculate the loan instalment amount based on the formula given below: Total interest amount = loan amount + (loan amount * interest rate * number of years) Loan instalment = Total interest amount Number of years (in months) 1. Write a function definition named calcTotInterest ( that receives loan amount interest rate and number of years. The function will calculate and return the total interest amount, based on the formula given above