Create an application to do the following tasks:
1.register a new customer as a buyer and/or a seller: name and email address.
2.add a customer%u2019s item to be listed for sale.
3.calculate a 10% commission of an item price when sold.
4.list a list of items for sale of a particular customer.
5.list a list of all items for sale: what it is, how much, contact information of a seller.
6.list a list of items sold, their prices, and date listed and date sold.
7.list a list of items that contain bids of customers and a cut off date and time for a bid.
8.enter a bid for an item and the bids are stored in an stl priority_queue object. this allows
the highest bid to be at front of the queue.