static void Main(string[] args) { IBM ibm = new IBM("IBM", 120); ibm.Bagla(new Yatirimci("Sorros")); ibm.Bagla(new Yatirimci("Berkshire")); ibm.Fiyat = 120; ibm.Fiyat = 121.00; ibm.Fiyat = 120.50; ibm.Fiyat = 120.75; }