Online Book Merchants offers premium customers 1 free book with every purchase of 5 or more books and offers 2 free books with every purchase of 8 or more books. It offers regular customers 1 free book with every purchase of 7 or more books, and offers 2 free books with every purchase of 12 or more books.
Write a statement that assigns freeBooks the appropriate value based on the values of the bool variable isPremiumCustomer and the int variable nbooksPurchased. Assign 0 to freeBooks if no free books are offered. Assume the variables freeBooks, isPremiumCustomer, and nbooksPurchased are already declared.
In C++ please