class BankAccount
  attr_reader :balance

  def initialize(balance)
    @balance = balance
  end

  def display_balance
    @balance
  end

  def deposit(amount)
    @balance += amount if amount > 0
  end

  def withdraw(amount)
    @balance -= amount if amount <= @balance
  end
end

class CheckingAccount < BankAccount
  attr_accessor :number_of_withdrawals

  # Define the instance constant
  MAX_FREE_WITHDRAWALS = 3

  def initialize(balance)
    # Use super to inherit all of the parent class's initialized variables
    super(balance)

    # Set the instance variable with a default number
    @total_withdrawals = 0
  end

  def get_free_withdrawal_limit
    MAX_FREE_WITHDRAWALS
  end

  def number_of_withdrawals
    @total_withdrawals
  end

  def transfer

  end

  def withdraw(amount)
    amt = amount
    if @total_withdrawals > MAX_FREE_WITHDRAWALS
      amt += 5
    end
    if amt < @balance
      # If it is, reduce the @balance by the amt
      @balance -= amt
      # Add 1 to the total_withdrawals instance variable
      total_withdrawals++

  end

end