public static void Main()
Console.WriteLine("Opel is ordinary car:");
Console.WriteLine("Kamaz is ordinary truck");
Console.WriteLine("Mersedes is firetruck");
var mersedes = new FireTruck();
mersedes.QuenchTheFire();
Console.WriteLine("Now car ride");
Console.WriteLine("Now car stopped");
Console.WriteLine("The truck carries the cargo");
public class FireTruck: Car
public void QuenchTheFire()
Console.WriteLine("The firetruck quench the fire");