public static void Main(string[] args)
{
var a1 = new DepositAccount("Kevin", "individual", 1000, 0.015);
var a2 = new LoanAccount("Dep", "individual", 30000, 0.07);
var a3 = new MortgageAccount("IVS LLC", "company", 80000, 0.04);
var a4 = new MortgageAccount("John", "individual", 80000, 0.04);
a1.DisplayAccountInfo();
a2.DisplayAccountInfo();
a3.DisplayAccountInfo();
a4.DisplayAccountInfo();
a1.InterestAfterMonths(12);
a2.InterestAfterMonths(12);
a3.InterestAfterMonths(12);
a4.InterestAfterMonths(12);
a1.Deposit(100);
a2.Deposit(12);
a1.Withdraw(100);
}