using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("float floatPI = 3.14f;

                          Console.WriteLine(floatPI); // 3.14

                          double doublePI = 3.14;

                          Console.WriteLine(doublePI); // 3.14

                          double num = 1.56e+12;

                          Console.WriteLine(num); // 1560000000000

                          double nan = Double.NaN;

                          Console.WriteLine(nan); // NaN

                          double infinity = Double.PositiveInfinity;

                          Console.WriteLine(infinity); // Infinity ");

    }

}