public static void Main()
Vehicle car = new Car { YearOfMake = "2021", NumberOfWheels = 4 };
if (car is Vehicle vehicle)
Console.WriteLine($"Found a vehicle with year {vehicle.YearOfMake}");
Console.WriteLine("Finished");
public string YearOfMake { get; set; }
public class Car : Vehicle
public int NumberOfWheels { get; set; }