Alter the program you generated in Exercise 2 so that the user will be allowed to enter either nothing, just the radius, just the center, or both the center and radius at the time the object is defined. Add to the client portion of the code an object called sphere3 that, when defined, will have the center at (15, 16) and the default radius. Be sure to print out this new objects vital statistics (area and circumference).

Code:

#include

using namespace std;

class Circles

{

private:

float radius;

int center_x;

int center_y;

public:

double findArea();

double findCircumference();

void printCircleStats();

Circles(float r);

Circles(float r, int centerX, int centerY);

Circles();

};

const double PI = 3.14;

Circles::Circles()

{

center_x = 0;

center_y = 0;

radius = 1;

}

Circles::Circles(float r)

{

radius = r;

center_x = 0;

center_y = 0;

}

Circles::Circles(float r, int centerX, int centerY)

{

radius = r;

center_x = centerX;

center_y = centerY;

}

double Circles::findArea()

{

return 3.14*radius*radius;

}

double Circles::findCircumference()

{

return 2 * 3.14*radius;

}

void Circles::printCircleStats()

{

cout << "The radius of the circle is " << radius << endl;

cout << "The center of the circle is (" << center_x << "," << center_y << ")" << endl;

}

int main() {

Circles sphere1(2), sphere2;

cout << " Sphere 1 : " << endl;

sphere1.printCircleStats();

cout << "The area of the circle is " << sphere1.findArea() << endl;

cout << "The circumference of the circle is " << sphere1.findCircumference() << endl;

cout << " Sphere 2 : " << endl;

sphere2.printCircleStats();

cout << "The area of the circle is " << sphere2.findArea() << endl;

cout << "The circumference of the circle is " << sphere2.findCircumference() << endl;

system("pause");

return 0;

}