calculate simple interest in C#.net

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace ConsoleApplication1

{

    class Program

    {

        static void Main(string[] args)

        {

            double p, r, si;

            int n;

            Console.Write("Enter Principle Amount : ");

            p = Convert.ToDouble(Console.ReadLine());

            Console.Write("Enter Nmuber of years : ");

            n = Convert.ToInt32(Console.ReadLine());

            Console.Write("Enter the rate of interest : ");

            r = Convert.ToDouble(Console.ReadLine());

            si = (p * n * r) / 100;

            Console.WriteLine("Simple Interest : {0}", si);

            Console.ReadLine();

        }

    }

}

Output