Checking Class

/*
if amount <= (balance + overdraft)
    If (amount <= maxWithdraw) OR (maxWithdraw = 0)
        Subtract amount from balance
    else
        throw PolicyException(“Over Max. Withdrawal”)
    endIf
else
    throw PolicyException(“Insufficient Funds”)
EndIf
return amount*/

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace atm_program
{
    class Checking : Account
    {
        //Members

        private double overdraft;
        private double maxWithdrawal;


        //Constructors
        public double Overdraft
        {
          get { return overdraft; }
          set { overdraft = value; }
        }
        public double MaxWithdrawal
        {
            get { return maxWithdrawal; }
            set { maxWithdrawal = value; }
        }

        //Methods

        public Checking(long acctNumber) :  base  (acctNumber)
        {
            overdraft = 50.00;
            maxWithdrawal = balance;
        }

        public override double Withdrawal(double amount)
        {
            if (amount <= balance + overdraft)
            {
                if ((amount <= maxWithdrawal)||(maxWithdrawal == 0.00))
                {
                    balance = balance-amount;
                }
                else
                {
                    throw new PolicyException("Over Max Withdrawal.");
                    //Console.WriteLine("Balance");
                }
            }
               else
                {
                    throw new PolicyException("Insufficient Funds.");
                }
            return amount;
            }

        }

    }