static void Main(string[] args)
{
var demo = new Demo(new ConsoleUI());
Class1 ccc = new Class3();
var fuelVehicle = new FuelVehicle("ABC123", 50);
fuelVehicle.FuelLevel = -3;
var level = fuelVehicle.FuelLevel;
List <IDrive> vehicles = new List <IDrive>
{
new FuelVehicle("ABC", 50),
new FuelVehicle("ABD", 50),
new FuelCar("CFD", 34),
new Bicycle("Fsdf34")
};
foreach (IDrive vehicle in vehicles)
{
Console.WriteLine(vehicle.Drive(20));
//Return null when fail
FuelCar fuelCar1 = vehicle as FuelCar;
//?. nullcheck
Console.WriteLine(fuelCar1?.DoSound());
if (fuelCar1 != null)
{
Console.WriteLine(fuelCar1.DoSound());
}
if (vehicle is FuelCar)
{
//Unsafe cast exeption when fail
FuelCar fuelCar = (FuelCar)vehicle;
Console.WriteLine(fuelCar.DoSound());
}
//If vehicle is a FuelCar cast to car
if (vehicle is FuelCar car)
{
Console.WriteLine(car.DoSound());
}
}
}
static void Main(string[] args)
{
Class1 ccc = new Class3();
var fuelVehicle = new FuelVehicle("ABC123", 50);
fuelVehicle.FuelLevel = -3;
var level = fuelVehicle.FuelLevel;
List <AbstractVehicle> vehicles = new List <AbstractVehicle>
{
new FuelVehicle("ABC", 50),
new FuelVehicle("ABD", 50),
new FuelCar("CFD", 34),
new Bicycle("Fsdf34")
};
foreach (var vehicle in vehicles)
{
Console.WriteLine(vehicle.Drive(20));
}
}