as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
create a data structure to represent a grocery store checkout system.
user
a queue of customers and a single register to process the purchases would work well for a grocery store checkout system. the queue would contain information about each customer, such as the items they are purchasing, the total cost and the payment method. the register would process the transactions, and add up and print out prices for each customer.
assistant