2) Write an interactive program that asks the user to enter the first letter of a geometric shape, and then let your program calculate and output the area and perimeter of the chosen shape. For simplicity, let your program deal only with rectangles and circles. Hints: For a rectangle: area = base height, perimeter = 2 * (base + height)) For a circle: area-2, circumference-2r, where r is the radius. Your program must display an error message to indicate that the user entered a character other than R', 'r', 'C' or 'c' Use the switch statement to decide which formulas to be used