/*	File Name: hw4carloan.cpp
        Author: Maggie Smith
        Instructor: Dr. John Wang
        Due Date: Sept. 26, 2007
        Compilation: g++ hw4carloan.cpp -o hw4carloan.out
        Execution: ./hw4carloan.out

        Goal: This program will calculate and output the balance after the 
	first, second, third, and fourth monthly car payments using the 
	formula from exercise 19 in the course packet. 
*/

#include <iostream>
#include <iomanip>	// setprecision

using namespace std;

int main()
{	
	float bal, pmt, i, n;
	int k;
	
	pmt = 165.25;
	i = 0.09/12.0;
	n = 36;

	cout << fixed << showpoint << setprecision(2);
	// output ...
	cout << "\nMonthly Payment:\t$" << pmt << "\n";
	cout << "Annual interest rate:\t" << i*12*100 << "%\n";
	cout << "# of Total Payments	36\n";

	k = 1;

	bal = pmt * ((1 - pow(1+i,k-n))/ i );
	cout << "\nBalance after " << k << " payment(s) is: $" << bal;

	k = 2;
	
	bal = pmt * ((1 - pow(1+i,k-n))/ i );
        cout << "\nBalance after " << k << " payment(s) is: $" << bal;

	k = 3; 

        bal = pmt * ((1 - pow(1+i,k-n))/ i );
        cout << "\nBalance after " << k << " payment(s) is: $" << bal;

	k = 4;

	bal = pmt * ((1 - pow(1+i,k-n))/ i );
        cout << "\nBalance after " << k << " payment(s) is: $" << bal << 
	"\n";

	return 0;
}