gistfile1.rb

class Account
  attr_reader :name,:balance
  def initialize(name,balance=100)
    @name = name
    @balance = balance
  end
  
  def display_balance(pin_number)
    puts pin_number == pin ? "Balance: $#{@balance}" : pin_error
  end
  
  def withdraw(pin_number,amount)
    @amount = amount
    if pin_number == pin
      amount > @balance ? overdraft : withdraw_accepted
    else
      pin_error
    end
  end
  
  def overdraft
    puts "You cannot withdraw that amount! Please try again"
  end
  
  def deposit(pin_number,amount)
    if pin_number == pin
      @balance += amount
      puts "Your balance is now $#{@balance}"
    else
      pin_error
    end
  end
  
  private
  
  def pin
    @pin = 1234
  end
  
  def withdraw_accepted
    @balance -= @amount
    puts "Withdrew #{@amount}.  New balance: $#{@balance}"
  end
  
  def pin_error
    puts "Access denied: incorrect PIN"
  end
end

jerrys_account = Account.new("USBANK",450)
jerrys_account.withdraw(1234,20)