class Program
{
    static void Main(string[] args)
    {
        double a = 1.6e308;
        double b = 1.7e308;

        double temp;

        Console.WriteLine("{0:r}", double.MaxValue);

        Console.WriteLine();

        Console.WriteLine("{0:r}", a);
        Console.WriteLine("{0:r}", b);

        Console.WriteLine();

        Console.WriteLine("{0:r}", b - a);
        Console.WriteLine("{0:r}", a + b);
        Console.WriteLine("{0:r}", (b - a) / 2);

        Console.WriteLine();

        Console.WriteLine("{0:r}", a + ((b - a) / 2));
        Console.WriteLine("{0:r}", (a + b) / 2);

        temp = a + b;
        temp = temp / 2;

        Console.WriteLine("{0:r}", temp);
        
        Console.ReadKey();
        //System.Windows.Forms.Application.Run(new Form1());           
    }
}