static void Main(string[] args) { Individual kiro = new Individual("Kiro"); Individual ivan = new Individual("Ivan"); Company sap = new Company("SAP"); DepositAccount kiroAccount = new DepositAccount(kiro, 1112, 0.2m); LoanAccount ivanAccount = new LoanAccount(ivan, 2222, 0.29m); MortgageAccount sapAccount = new MortgageAccount(sap, 3333, 0.23m); List <Account> accounts = new List <Account>() { kiroAccount, ivanAccount, sapAccount }; foreach (var account in accounts) { Console.WriteLine(account); } Console.WriteLine(kiroAccount.CalculateInterestrate(4)); Console.WriteLine(sapAccount.CalculateInterestrate(55)); sapAccount.Deposit(4141); kiroAccount.Withdraw(333); foreach (var account in accounts) { Console.WriteLine(account); } }