How do I write a C program for that and it want to draw a structure chart

e (KM) is medium sized mortgage company. Any one who is interested to buy
a house can lend money from this company by their mortgage system. Once the contract is signed for a capital value (say P) the borrower pays the same amount of money (say A) to this company each month throughout the life of the mortgage. Part of the monthly payment will be interest calculated as i percent (monthly percentage) of the current unpaid balance. The remainder of the monthly payment will be applied toward reducing the unpaid balance of the capital.
The company needs to determine the following information.
o The amount of interest paid each month
o The amount of money paid to settle the mortgage each month.
o The cumulative amount of interest that has been paid at the end of each month.
o The cumulative amount of money that has been paid to settle the mortgage at the
end of each month
o The amount of the money (from the capital) that is still unpaid at the end of each
month.
o The amount of the last payment. (this might be less than A).
o The life time of the mortgage in months.
o The total amount of money paid at the end of the life time of the mortgage.
 Use the top down decomposition approach to develop this problem
(i) Draw the structure chart clearly.
(ii) Identify the call by value and call by reference parameters.
(iii) Write the complete program in C.
As an example, you may test the data using P = Rs.200,000, A = 20,000, i =1% per
month, P = Rs. 400,000, A= 20,000 , i = 1% per month