• looker_customer.h

• Create a new class LookerCustomer that inherits from the Customer class.
• Add a new private attribute, a vector of books that the customer has looked at.
• Add a public method to add a book to the looked at list.
• Override the interaction method to implement the behavior of just looking at books.

• looker_customer.cpp

• Implement the methods defined in the LookerCustomer header file.

• simulation.h

• Modify the select_random_data method to also generate LookerCustomers for the simulation.

• simulation.cpp

• Implement the changes made in the Simulation header file.
• In the select_random_data method, add code to generate LookerCustomers.
• In the run method, add code to handle interactions with LookerCustomers.