public double TotalInterestPaid()
{
double totalInterest = 0;
for (int i = 0; i < listOfBankAccount.Count; i++)
{
BankAccount_3 b = (BankAccount_3)listOfBankAccount[i];
double intr = b.CalculateInterest();
if (intr > 0)
{
totalInterest += intr;
}
}
return(totalInterest);
}
public double TotalInterestEarned()
{
double total = 0;
for (int i = 0; i < listOfBankAccount.Count; i++)
{
BankAccount_3 a = (BankAccount_3)listOfBankAccount[i];
double intr = a.CalculateInterest();
if (intr < 0)
{
total += (-intr);
}
}
return(total);
}
public static void Main()
{
Customer cus1 = new Customer("Tan Ah Kow", "2 Rich Street",
"P123123", 20);
Customer cus2 = new Customer("Kim May Mee", "89 Gold Road",
"P334412", 60);
BankAccount_3 a1 = new BankAccount_3("S0000223", cus1, 2000);
Console.WriteLine(a1.CalculateInterest());
OverdraftAccount a2 = new OverdraftAccount("O1230124", cus1, 2000);
Console.WriteLine(a2.CalculateInterest());
CurrentAccount a3 = new CurrentAccount("C1230125", cus2, -1);
Console.WriteLine(a3.CalculateInterest());
}
