/****************************************************/
/*                                                  */
/*   CSCI 121: Principles of Computer Programming   */
/*   Programming Project #5                         */
/*   Due Wednesday, February 16                     */
/*   Programmed by Ian Giese                        */
/*                                                  */
/****************************************************/
#include <iostream>
#include <fstream>
#include <iomanip>
#include <cmath>

using namespace std;

int main()
{
    //Declare all the variables
    int numYears;
    double loanAmount, payment;
    ofstream output("output.lab5");
    
    //Take input from keyboard user
    cout << "Input the loan amount: ";
    cin >> loanAmount;
    
    //Set up table
    output << "Repayment options for a loan of $" << fixed << showpoint
           << setprecision(2) << loanAmount << endl << endl << "Table shows "
           << "the total amount that will be repaid" << endl << endl << "Years"
           << right << setw(10) << "4.0%" << setw(11) << "4.5%" << setw(11)
           << "5.0%" << setw(11) << "5.5%" << setw(11) << "6.0%" << setw(11)
           << "6.5%" << setw(11) << "7.0%";
           
    //Main program loop
    for(numYears = 1; numYears < 21; numYears++)
    {
                 output << endl << setw(4) << numYears;
                 
                 //Calculate all of that will be repaid
                 for(double intRate = 4; intRate < 7.1; intRate += 0.5)
                 {
                  payment = loanAmount * (((intRate/1200) *
                             pow(1.0+(intRate/1200), numYears * 12.0)) / 
                             (pow(1.0+(intRate/1200), numYears * 12.0) - 1));
                  payment = payment * (numYears * 12.0);
                  
                  //Main output
                  output << setw(11) << payment;
                 }
    }
    
    cout << "Press enter to continue...";
    cin.get();
    return 0;
}