Problem
1. Write a program that fills the window with a large ellipse, with a black outline and filled with your favorite color. The ellipse should touch the window boundaries, even if the window is resized.
2. Implement a graphical application that simulates a cash register. Provide a text field for the item price and two buttons for adding the item to the sale, one for taxable items and one for nontaxable items. In a text area, display the register tape that lists all items (labeling the taxable items with a *), followed by the amount due. Provide another button for starting a new sale.