Description
Write a Circle class that has the following member variables :
• radius: a double
• pi: a double initialized with the value 3.14159
The class should have the following member functions:
• Default Constructor . A default constructor that sets radius to 0.0.
• Constructor . Accepts the radius of the circle as an argument .
• setRadius. A mutator function for the radius variable .
• getRadius. An accessor function for the radius variable .
• getArea. Returns the area of the circle, which is calculated as area = pi * radius * radius
• getDiameter. Returns the diameter of the circle, which is calculated as diameter = radius * 2
• getCircumference. Returns the circumference of the circle, which is calculated as circumference = 2 * pi * radius
Write a program that demonstrates the Circle class by asking the user for the circle’s radius, creating a Circle object , and then reporting the circle’s area, diameter, and circumference.
Sample Run:
Calling defeault constructor: The circle’s radius in the default Circle Object is: 0
Calling setRadius(20) to change radius of default:
The circle’s radius in the default Circle Object is Now: 20
Creating Circle circle2(10):
The circle2’s radius in the circle2 Object is: 10
The circle2’s area is therefore: 314.159
The circle2’s diameter is therefore: 20
The circle2’s circumference is therefore: 62.8318
