Design a "Tips" class that calculates the gratuity on a restaurant meal. Its only class member variable, "taxRate", should be set by a one$-$parameter constructor to whatever rate is passed to it when a "Tips" object is created. If no argument is passed, a default tax rate of $\mathrm{.}085$ should be used. The class should have just one public function, "computeTip". This function needs to accept two arguments, the total bill amount and the tip rate. It should use the total bill amount, along with the value stored in the "taxRate" member variable, to compute the cost of the meal before the tax was added. It should then apply the tip rate to just the meal cost portion of the bill to compute and return the tip amount. Demonstrate the class by creating a program that creates a single "Tips" object, and then has a sentinel$-$controlled loop to let the user retrieve the correct tip amount using various bill totals and desired tip rates.