using System;
public class Program
{
enum Level { Low, Medium, High }
public static void Main()
string compName = null;
Console.WriteLine(compName is null); // True
int input = 5;
if (input is 5)
Console.WriteLine("input is 5"); // input is 5
Level value1 = Level.Low;
bool test = value1 is Level.Low;
Console.WriteLine(test); // True
}