static void Main(string[] args)
{
var savingsAccount = new SavingsAccount(owner: "Joe Decker",
balance: 200);
savingsAccount.ShowAccountDetails();
savingsAccount.Withdraw(20);
savingsAccount.CheckRemainingBalance();
savingsAccount.Deposit(100);
savingsAccount.CheckRemainingBalance();
var loanAccount = new LoanAccount(owner: "John Wright",
balance: -1200);
loanAccount.ShowAccountDetails();
loanAccount.Deposit(200);
loanAccount.CheckRemainingBalance();
var investmentAccount = new InvestmentAccount(owner: "Mike Schwartz",
balance: 10000);
investmentAccount.ShowAccountDetails();
investmentAccount.Withdraw(2000);
investmentAccount.CheckRemainingBalance();
investmentAccount.Deposit(1200);
investmentAccount.CheckRemainingBalance();
}