Concept explainers
PreferredCustomer Class
A retail store has a preferred customer plan where customers can earn discounts on all their purchases. The amount of a customer’s discount is determined by the amount of the customer’s cumulative purchases in the store as follows:
- When a preferred customer spends $500, he or she gets a 5 percent discount on all future purchases.
- When a preferred customer spends $1,000, he or she gets a 6 percent discount on all future purchases.
- When a preferred customer spends $1,500, he or she gets a 7 percent discount on all future purchases.
- When a preferred customer spends $2,000 or more, he or she gets a 10 percent discount on all future purchases.
Design a class named PreferredCustomer, which extends the Customer class you created in
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