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(); }
private static void Main() { // 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.SetPricePerPound(0.79); Console.WriteLine(); carrots.SetPricePerPound(0.76); Console.WriteLine(); carrots.SetPricePerPound(0.74); Console.WriteLine(); carrots.SetPricePerPound(0.81); Console.WriteLine(); }
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.AddObserver(new Restaurant("Bubbles", 0.99, carrots)); carrots.AddObserver(new Restaurant("Johns", 0.75, carrots)); carrots.AddObserver(new Restaurant("Steve's'", 0.77, carrots)); Broccoli broccoli = new Broccoli(.75); IRestaurant bubbles = new Restaurant("Bubbles", .99, broccoli); broccoli.AddObserver(bubbles); broccoli.PricePerPound = .45; // Fluctuating carrot prices will notify subscribing restaurants. carrots.PricePerPound = .77; carrots.PricePerPound = .50; carrots.PricePerPound = 10; carrots.PricePerPound = .84; Console.ReadLine(); }