using System;

​

namespace TestSwitch

{

    interface IClass

    {

    }

​

    class A: IClass

    {

    }

    class B : IClass { 

    }

    class C : IClass { 

    }

    class Program

    {

        static void Main(string[] args)

        {

            Console.WriteLine("Hello World!");

        }

​

        static void HandleCases (IClass val)

        {

            string v = val switch

            {

                A a => "Got A",

                B b => "Got B",

            };

            Console.WriteLine(v);

        }

    }

}

​