private static void Main() { CompanyCustomer companyBBC = new CompanyCustomer("BBC", "UK123456", "Manchester", "0123456"); LoanAccount loanAccount = new LoanAccount(companyBBC, 0.5m, 10000); loanAccount.AddDeposit(10000); int months = 12; Console.WriteLine( "{0} have interest for {1} months: {2}% ", loanAccount.Customer, months, loanAccount.CalculateInterestAmountForGivenTime(months)); loanAccount.Customer = new IndividualCustomer("Stilyan Petrov", 12345, "Random", "0888 123 456"); Console.WriteLine( "{0} Interest for {1} months: {2}% ", loanAccount.Customer, months, loanAccount.CalculateInterestAmountForGivenTime(months)); }