/*
 * This program computes the volume of a sphere
 * Input: The radius of the sphere.
 * Output: The volume of the sphere.
 *
 */

#include <iostream.h>
#include <math.h>

Class Sphere {
	public:
		void set_radius(double rad);
		void compute_volume();
		void print_volume();

	private:
		double radius;
		double volume;
}


Sphere::set_radius(double rad)
{
	const double Pi = 3.14159;  // Mathematical constant

	radius = rad;
	compute_volume();
}

Sphere::compute_volume()
{
	volume = 4.0 * Pi * pow(radius, 3.0) / 3.0;
}

Sphere::print_volume()
{
	cout << "\nvolume = " << volume << "\n\n";
}

int main(void)
{
	Class Sphere sphere;
	double radius;

	cout << "\n Please enter the radius of the sphere:";
	cin >> radius;

	sphere.set_radius(radius);
	sphere.print_volume();

	exit(0);
}