public double totalCost(Apple apple, Orange orange)
{
for (int i = 0; i < items.Count; i++)
{
if (items[i] == apple)
{
amount += apple.price;
}
if (items[i] == orange)
{
amount += orange.price;
}
}
return(amount);
}
public ArrayList addApple(Apple apple)
{
items.Add(apple);
return(items);
}
static void Main(string[] args)
{
Apple apple = new Apple(0.6);
Orange orange = new Orange(0.25);
Checkout checkout = new Checkout(0, [apple, apple, orange]);
}