static void Main()
{
// Create investors
Investor s = new Investor("Sorros");
Investor b = new Investor("Berkshire");
// Create IBM stock and attach investors
IBM ibm = new IBM("IBM", 120.00);
ibm.Attach(s);
ibm.Attach(b);
// Change price, which notifies investors
ibm.Price = 120.10;
ibm.Price = 121.00;
ibm.Price = 120.50;
ibm.Price = 120.75;
// Wait for user
Console.Read();
}
public void Detach(Investor investor)
{
investors.Remove(investor);
}
public void Attach(Investor investor)
{
investors.Add(investor);
}