using System;

using System.Collections.Generic;

​

public class CompoundInterest

{

    // Reuqire: principal sum; annual interest rate

    private int prin; 

    public int Principal{

        get {return prin;}

    }

    private double rate;

    //Random rnd2 = new Random();

    public CompoundInterest(int p,double r)

    {

        prin = p;

        rate = r;

        //rnd2 = new Random(Seed);

    }

    //Pow(double base, double power)

    public double GetInterest(int y){

        double allmoney = (double)(Principal*Math.Pow(1+rate,y));

        double CI = allmoney - Principal;

        return CI;

    }

}

​

public class Program

{

    public static void Main()

    {

        CompoundInterest c = new CompoundInterest(100000,0.035);

        // Principal is the 100000, annual interest rate is 3.5%

​

        Console.WriteLine("p = {0}", c.Principal);

​

        double interest = c.GetInterest(5); // calculate interest after 5 years

        Console.WriteLine("Interest = {0}", interest);

    }

}