Basic Web Shop C++

I'm sure you would have seen this project posted up many times. (heck if you have completed it already, this makes your job that much easier) You are to develop software for a simple online shopping situation. The entities in this scenario include the web shop, customers, products, orders and invoices. The shop has a list of products available. A customer logs in, selects products and adds them to his/her order. When the shopping is complete an invoice with unique invoice number is generated for the order. There are 10 products in this simple example and they should be stored in an array. Products can be added and deleted from an order. Only one customer at a time need be considered. (I require a Distinction level.) Solutions at this level should be mainly OO with 3 or 4 classes. Procedural code should be minimal. Products should be read from the file. Advanced features such as constructors and/or default parameters are expected. Code style must be good in all respects. Looking to pay ASAP as the due date is near. Winning bid will also be contacted again for an easier task for extra cash.