static void Main(string[] args)
{
Carrots carrots = new Carrots(0.82);
carrots.Attach(new Restaurant("Mackay's", 0.77));
carrots.Attach(new Restaurant("Johnny's Sports Bar", 0.74));
carrots.Attach(new Restaurant("Salad Kingdom", 0.75));
carrots.PricePerPound = 0.79;
carrots.PricePerPound = 0.86;
carrots.PricePerPound = 0.74;
carrots.PricePerPound = 0.81;
}
static void Main(string[] args)
{
// Create price watch for Carrots and attach restaurants that buy carrots from suppliers.
Carrots carrots = new Carrots(0.82);
carrots.Attach(new Restaurant("Mackay's", 0.77));
carrots.Attach(new Restaurant("Johnny's Sports Bar", 0.74));
carrots.Attach(new Restaurant("Salad Kingdom", 0.75));
// Fluctuating carrot prices will notify subscribing restaurants.
carrots.PricePerPound = 0.79;
carrots.PricePerPound = 0.76;
carrots.PricePerPound = 0.74;
carrots.PricePerPound = 0.81;
Console.ReadKey();
}