#include <stdio.h>
int main()
{
  double initial_principal, annual_interest_rate, monthly_payment, total, interest = 0,
    total_payments, annuity;
  
  int years_annuity, months = 0, payments = 0;

  total = initial_principal;

  printf("Enter an initial deposit amount:\n\n");
  scanf("%lf", &initial_principal);

  printf("Enter an annual interest rate:\n");
  scanf("%lf", &annual_interest_rate);
 
  printf("Your first month of interest will be: %.2lf\n", annual_interest_rate / 12 * (initial_principal / 100));

  printf("Enter the number of years your annuity will be in the bank:\n");
  scanf("%d", &years_annuity);

  printf("Enter the amount of your monthly payment:\n");
  scanf("%lf", &monthly_payment); 

  printf("You started with a principal of $%0.2lf\n", initial_principal);

  while ( months < years_annuity * 12 )
   {
     interest = interest + (annual_interest_rate / 12 * (initial_principal / 100));
     printf("%.2lf\n", interest);
  
     total_payments = (total * (1 + (12 / annual_interest_rate * .01))) - monthly_payment;
     printf("%.2lf\n", total_payments);
   
     ++months;
   }
  
  annuity = interest + total_payments + total;

  printf("Your payment schedule consists of %d payments of $%.2lf,\n", months, monthly_payment);

  printf("The total amount of your payments will be $%.2lf.\n", total_payments);

  printf("The total amount of interest you earn will be $%.2lf.\n", interest);

  printf("At the end of %d years your annuity will be worth $%.2lf.\n", annuity);

  return 0;

}