using System;

public class Program

{

    public enum E {}

    public class C {}

    public interface I {}

    public static void Main()

    {

        var number = 3.14;

        var text = "hello";

        var date = new DateTime(2000, 12, 31);

        var types = new [] {typeof(double), typeof(string), typeof(DateTime), typeof(E), typeof(C), typeof(I)};

        foreach (var type in types)

            Console.WriteLine($"IsValueType={type.IsValueType} & IsPrimitive={type.IsPrimitive}");

        //var e = (type.IsValueType & type.IsPrimitive);

        //Console.WriteLine(FastDeepCloner.DeepCloner.Clone(number));

        Console.WriteLine(number);

        //Console.WriteLine(FastDeepCloner.DeepCloner.Clone(text));

        Console.WriteLine(date.AddDays(1));

        Console.WriteLine(date);

        Console.WriteLine("e=" + 1d/null + " ");

        Console.WriteLine("e=" + (double?)null/null + " ");

    }

}