Question 7 Construct a Circle class diagram 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 are 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 C++ program that demonstrates the Circle class by asking the user for the circle's radius, creating a Circle object, then display the circle's area, diameter, and circumference.

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OOPs

In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career. 

Constructor

The easiest way to think of a constructor in object-oriented programming (OOP) languages is: