Your program should work with the following test program, to produce the expected output shown below.

Expected Output:

Books bought successfully

Books bought successfully

Not enough money in the card

Remaining balance: $9\mathrm{.}0$Create a class GiftCard that represents a gift card for the purchase of books online. It should have the following private

attribute:

amount $-$ the amount of money on the card

and the following public methods:

GiftCard$($double amount$)-$ a constructor to initialize the card

void buyBook$($double totalPrice$)-$ records the purchase of books by decreasing the amount of money used for purchase

using this card and prints "Books bought successfully". Print an error message if the gift card does not have sufficient

amount to pay the totalPrice.

double amountRemaining$()-$ returns the remaining amount of money in the gift card.