ATA INPUT 1. Register key figures and information. Use macros(#define) to set the tax rate, cost of insurance, and the cost of utilities. Define the percentage of down payment as a non-global memory constant. 2. Write a function to input all data, Prompt the user for the selling price, the rate of interest, and the number of years for the loan. Assign those values directly into the memory(variables); No global variable. CALCULATIONS Write at least these functions: a) A function, e. g. calc_monthly_cost(.), to handles all computations, implemented by invoking these sub-functions to: b) compute down payment, c) compute amount of loan, and d) compute monthly mortgage payment; and then sum up all the monthly items, mortgage + utilities + property tax + insurance, to give the total monthly cost. No global variable.