I am implementing a shopping mall system in c++

One class is of Mall with data members and are possible methods listed below:

The mall itself. The mall performs the creation of a set of different stores, such as a book store, a shoe store, an electronic games store, etc. The mall greets an arriving customer and allows the customer to shop at the mall. Some of the things a customer can do at the mall are:

Get a list of available stores

Get a shopping cart

Enter a store

Get of list of items available for sale at the store

Add items to the shopping cart

Proceed to checkout and purchase the items

Notable Attributes:

name - the name of the mall

stores - a collection of stores of different types

customers - the customers currently in the mall

Possible Methods:

void enter(Customer c) - customer c enters the mall

void exit(Customer c) - customer c exits the mall

ShoppingCart getShoppingCart - returns an empty shopping cart

Enumeration customers() - returns an enumeration of the customers in the mall

void checkout(shoppingCart cart) - checkout and purchase the items in the shopping cart

Help me out in implementing class