/*
 * declarations for a generic stack
 */

/*
 * gstack class
 */
class gstack 
{
  public:
    void *vpush(void *value);
    void *vpop();
    bool empty();
    bool full();
    gstack(int capacity);
    ~gstack();
    gstack(const gstack &old_gstack);

  private:
    int top, capacity;
    void **values;
};