class BookInStock

	attr_reader :isbn
	attr_accessor :price

	def initialize(isbn, price)
	@isbn = isbn
	@price = Float(price)
	end

	def price_in_cents
	Integer(price*100 + 0.5)
	end

	def price_in_cents=(cents)
		@price = cents / 100.0
	end
end

book = BookInStock.new("isbn1", 33.80)
puts "Price 					= #{book.price}"
puts "Price in cents 	= #{book.price_in_cents}"
book.price_in_cents = 1234
puts "Price 					= #{book.price}"
puts "Price in cents 	= #{book.price_in_cents}"