using System;

public class Program

{

    public static void Main()

    {

            object a = "string"; // a is a string

            //object a = 1; // a is an int

            if (a is int b)

            {

                Console.WriteLine("We have just declared b and set its value to be equal to a");

            }

            else

            {

                b = 2;

                Console.WriteLine("We have just declared b and set its value to be 2");

            }

​

            Console.WriteLine("a = " + a.ToString());

            Console.WriteLine("b = " + b.ToString());

    }

}