#include <iostream>

using namespace std;

// shape == 0, sphere == 1, cylinder == 2, polygon == 3

enum Forms { shape, sphere, cylinder, polygon };

// point2d == 2, point2w == 3, point3d == 3, point3w == 4
enum Points { point2d = 2, point2w, point3d = 3, point3w };

int main(void){
  Points pt3d = point3d;  // ok: pt3d == 3

  Points pt2w;

  // error: pt2w initialized with int
  // pt2w = 3;

  // error: polygon is not a points enumerator
  // pt2w = polygon;

  // ok: both are objects of Points enum type
  pt2w = pt3d;

  // prints out the integer value assoicated with the enumerator
  cout << pt3d << ' ' << pt2w << ' ' << point3d << endl;

  return 0;
}