import java.util.Scanner;

/**
 * Write a description of class TestProgram here.
 * 
 * @author John Paxton
 * @version September 26, 2008 
 */

public class TestProgram
{
    public static void main (String [] args)
    {
        double principal;           // starting money to invest
        double rate;                // interest rate
        int numberPeriods;          // number of compounding periods per year
        int timePeriod;             // number of years to compound
        double amount;              // final amount after compounding
        
        Scanner inputSource = new Scanner (System.in);
        
        System.out.println("Compound Interest Calculator");
        System.out.println("----------------------------");
        
        System.out.print("Enter the starting principal: ");
        principal = inputSource.nextDouble();
        
        System.out.print("Enter the interest rate percent (e.g. 4.3): ");
        rate = inputSource.nextDouble();
        rate = rate / 100;
        
        System.out.print("Enter the number of compounding periods: ");
        numberPeriods = inputSource.nextInt();
        
        System.out.print("Enter the number of years to compound: ");
        timePeriod = inputSource.nextInt();
        
        amount = principal * 
            Math.pow ((1 + rate / numberPeriods), numberPeriods * timePeriod);
            
        System.out.format("The compounded amount = $%.2f", amount);
    }
}