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Users may order one or more pizzas, where each pizza may be either: small, medium or large. Small pizzas cost $5, medium pizzas cost $8 and large pizzas cost $12.

All pizzas comeon a tomato base (for our pizza shop, this will betheonly option), and will have the topping

cheese by default, at no extra cost. Users maychooseup to a maximum of four additional toppings (bringing the total to five) from the followinglist, where each topping adds an additional $1 to the price of the pizza:

Bacon,

Olives,

Ham,

Mushrooms,

Pineapple,

Salami,

Anchovies.

A pizza order consists of an order for one or more pizzas, where  each pizza  has a size, and may optionally include a list of up to four additional toppings.

Each pizza order must be marked as either to be collected or to be delivered.

If the pizza is to be collected then the order requires a name and a phone number to be valid.

If the pizza is to be delivered then a name, phone number and address are required to be valid. In addition, if the order total is less than $30 then an $8 delivery fee is added to the total.