using System;

​

public class Program

{

    public static void Main()

    {

        PrintType(typeof (IFirst));

        PrintType(typeof (FirstS));

        PrintType(typeof (FirstC));

    }

​

    public static void PrintType(Type t)

    {

        Console.WriteLine("---------------");

        Console.WriteLine(t.FullName);

        Console.WriteLine(t.IsByRef);

        Console.WriteLine(t.IsClass);

        Console.WriteLine(t.IsInterface);

        Console.WriteLine(t.IsValueType);

    }

}

​

public interface IFirst

{

    int GetCount();

}

​

public class FirstC : IFirst

{

    public int GetCount()

    {

        return 3;

    }

}

​

public struct FirstS : IFirst

{

    public int GetCount()

    {

        return 0;

    }

}