DSA C++ The system is used by the waiter. In the main menu, the Waiter can check the list of served orders, orders list, serve the order (it will remove the order from the order list and will add it into the served queue), and take new order. For taking new order there will be a menu displayed for different pizza flavors then after choosing it different toppings will be selected ( and different sauces etc you can add more things to it) and then after that waiter will finish the order or the main menu will appear again. It is to be done using a queue. There will be an order queue and the served orders must go into the served queue.Order taken first must be served first.