// CALCVOL.CPP A program to calc. the volume of 3 spheres
#include <iostream.h>
void main()
{	float volume, radius;

	cout << "enter a radius: ";					// first sphere
	cin >> radius;
	volume = (4.0 / 3.0) * radius * radius * radius * 3.14;
	cout << "the volume is " << volume << endl;

	cout << "enter a radius: ";					// second sphere
	cin >> radius;
	volume = (4.0 / 3.0) * radius * radius * radius * 3.14;
	cout << "the volume is " << volume << endl;

	cout << "enter a radius: ";					// third sphere
	cin >> radius;
	volume = (4.0 / 3.0) * radius * radius * radius * 3.14;
	cout << "the volume is " << volume << endl;
}