Basic object oriented programming for practice.

basic-oop.rb

class Account
    attr_reader :name
    attr_reader :balance
    def initialize(name, balance=100)
        @name = name
        @balance = balance
    end

public
def display_balance(pin_number)
    puts pin_number == pin ? "Balance $#{balance}!" : pin_error
end

def withdraw(pin_number, amount)
    if pin_number == pin
        @balance -= amount 
        puts "Withdrew $#{amount}. New balance: $#{balance}."
    else
        puts pin_error
    end
end
    

private
def pin
    @pin = 1234
end

def pin_error
    return "Access denied: incorrect PIN."
end
end

x1 = Account.new("Nicholas", 500)
x1.withdraw(1234, 300)
x1.display_balance(1234)