#include <stdio.h>

int
main(void)
{
  double princ_amt;    /* Principle amount borrowed */
  double airate;       /* Annual interest rate */
  double mirate;       /* Monthly interest rate */
  double m_int;        /* Monthly interest */
  double m_pay;        /* Monthly payments */
  double remain_amt;   /* Remaining after paying interest */
  double tot_int;      /* Total intrest on loan */
  int month;           /* How many months it will take to complete payment */

  /* Get principle amount */
  printf("Enter a principle amount:  ");
  scanf("%lf", &princ_amt);

  /* Gets annual interest rate */
  printf("Enter an annual interest rate: ");
  scanf("%lf", &airate);

  /* Converts annual interest to monthly */
  mirate = airate / 1200;

  /* Computes monthly interest amount */
  m_int = mirate * princ_amt;

  /* Shows user the amount of the first months intrest */
  printf("Your first month of intrest will be: %.2f\n", m_int);

  /* Gets monthly payment */
  printf("Enter the amount of your monthly payment: ");

  /* Shows how much the user borrowed */
  printf("You borrowed $%.2f\n", princ_amt);
  scanf("%lf", &princ_amt);

  /* Loops until monthly payments are larger than amount left */
  month = 0;
  tot_int = 0;
  m_pay = m_pay;
  while (princ_amt > m_pay)
{
    m_int = mirate * princ_amt; /* calculating monthly interest */
    remain_amt = m_pay - m_int; /* calculating remainder after paying interest */
    month = month + 1; /* calculating the months it take to complete */
    tot_int += m_int; /* calculating the full interest */
    princ_amt = princ_amt - remain_amt; /* paying the loan itself */

}
  printf("Your payment schedule consists of %d payments of $%.2f and a final prinicipal payment of $%.2f.\n", month, m_pay, princ_amt);

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

  return(0);
}