# C++ Sphere Objects

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Write a program that instantiates four sphere objects (assigning a radius to each instance) and adds them to a pointer-based linked list. Include a function to display the statistics of each sphere in the list.

// ***************************************************

// Header file for the class sphereClass.

// ***************************************************

const double PI = 3.14159;

class sphereClass

{

public:

sphereClass();

// Default constructor: Creates a sphere and

// initializes its radius to a default value.

// Precondition: None.

// Postcondition: A sphere of radius 1 exists.

sphereClass(double InitialRadius);

// Constructor: Creates a sphere and initializes

// its radius.

// Precondition: InitialRadius is the desired

// radius.

// Postcondition: A sphere of radius InitialRadius

// exists.

void SetRadius(double NewRadius);

// Sets (alters) the radius of an existing sphere.

// Precondition: NewRadius is the desired radius.

// Postcondition: The sphere's radius is NewRadius.

double Radius() const;

// Determines a sphere's radius.

// Precondition: None.

// Postcondition: Returns the radius.

double Diameter() const;

// Determines a sphere's diameter.

// Precondition: None.

// Postcondition: Returns the diameter.

double Circumference() const;

// Determines a sphere's circumference.

// Precondition: PI is a named constant.

// Postcondition: Returns the circumference.

double Area() const;

// Determines a sphere's surface area.

// Precondition: PI is a named constant.

// Postcondition: Returns the surface area.

double Volume() const;

// Determines a sphere's volume.

// Precondition: PI is a named constant.

// Postcondition: Returns the volume.

void DisplayStatistics() const;

// Displays statistics of a sphere.

// Precondition: None.

// Postcondition: Displays the radius, diameter,

// circumference, area, and volume.

private:

double TheRadius; // the sphere's radius

}; // end class

// End of header file.

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The expert examines C++ sphere objects in linked lists.

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- BSc (Hons), University of Colombo - Sri Lanka
- MEngSc, University of Melbourne
- Certificate IV in Training & Assessment , Australian Business Council

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