welcome

 

/*
 * Created by SharpDevelop.
 * User: Soledad
 * Date: 2011/7/6
 * Time: 11:30
 *
 * To change this template use Tools | Options | Coding | Edit Standard Headers.
 */
using System;

namespace Welcome
{
    class Program
    {
        public static void Main(string[] args)
        {

            double r = Convert.ToDouble(Console.Read());

            Console.WriteLine("The diameter is {0}.",2*r);
            Console.WriteLine("The circumference is {0}.",2*Math.PI*r);
            Console.WriteLine("The area is {0}.",Math.PI*r*r);

            Console.Write("Press any key to continue . . . ");
            Console.ReadKey(true);
        }
    }
}