Professor Nagel LOVES pie! So much so that he retired from teaching and now operates a pie shop, where you can buy pie by the slice.

Create an application for Count Nagel's Pies. Customers can purchase a $($single$)$ slice of pie $($Apple: $$1\mathrm{.}99,$ Cherry $$2\mathrm{.}19,$ Pecan $$2\mathrm{.}99,$ Lemon $$1\mathrm{.}99)$ and can optionally add Whipped Topping for $$0\mathrm{.}25.$

Customers may also leave a tip for the pie shop $($this may be entered as a percentage OR dollar amount $-$ you decide when you build the app$).$

Record the customer's name. When the "Order" or "Buy" button is clicked, show the order on screen $($ex: "Prof. Nagel ordered Cherry pie with Whipped Topping: $$2\mathrm{.}44$ total"$)$

Keep track of and show how many total slices of pie have been ordered.