When a customer is checking out, the cash register needs to store the required data pertaining to each item the customer is buying. This data includes the item name, the price per pound, and the number of pounds of that item being purchased. This should be stored in three (3) arrays (one (1) for the item name, one (1) for the price per pound, and one (1) for the number of pounds being purchased) with corresponding index values. For ex, index value 3, when applied to the "itemName" array, would give as the name of the third item that the customer is buying. That same index value of 3, when applied to the "pricePerPound" array, would give us the price per pound of that same third item that the customer is buying.

When that last item in the purchase has been saved to the array, an itemized receipt is printed which shows the relevant data (name, price, and amount purchased) of each item, the subtotal price for each item (which is find outd as price per pound times the number of pounds), and the grand total purchase amount of all items.