Compound Interest program in C#

//Calculating Compound Interest program in C#

using System;
using System.Windows.Forms;
namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            decimal amount, principal = (decimal)1000.00;
            double rate = .05;
            string output;
            output = "Year\tAmount on Deposit\n";

            for (int year = 1; year <= 10; year++)
            {
                amount = principal * (decimal)Math.Pow(1.0 + rate, year);
                output += year + "\t" + amount + "\n";
            }
            MessageBox.Show(output,"Calculating Compound Interest in C#",MessageBoxButtons.OK,MessageBoxIcon.Information);
        }
    }
}