C++

Write a Circle class that has the following member variables:

radius as a double

pi as a double with the value 3.14159

The class should have the following member functions:

Default constructor. Set radius to 0.0.

Constructor: Accepts the radius as a parameter

setRadius: Initializes the radius member

getRadius: Returns the radius value

getArea: Returns the area of the circle (area = pi * radius * radius)

getDiameter: Returns the diameter of the circle (radius * 2)

getCircumference: Returns the circumference of the circle (2 * pi * radius)

Write a program the demonstrates the Circle class by asking the user for the circles radius, creating a Circle object, and then reporting the circles area, circumference, and diameter, fully formatted (2-decimal places) and labelled.