using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        GetType(3);

        GetType("Hi");

        GetType(false);

        GetType(2.5f);

        GetType(new List<string>());

        GetType(null);

        GetType(3.5);

    }

​

    static void GetType(object obj)

    {

        switch (obj)

        {

            case int i:

                Console.WriteLine($"{i} is an integer.");

                break;

            case string s:

                Console.WriteLine($"{s} is a string.");

                break;

            case bool b:

                Console.WriteLine($"{b} is a Boolean.");

                break;

            case float f:

                Console.WriteLine($"{f} is a float.");

                break;

            case List<string> l:

                Console.WriteLine($"{l} is a List object.");

                break;

            case null:

                Console.WriteLine("Value is null.");

                break;

            default:

                Console.WriteLine("Invalid datatype");

                break;

        }

    }

}