+
−#ifndef INCLUDED_DEMONSTRATION
+
−#define INCLUDED_DEMONSTRATION
+
−
+
−#ifndef INCLUDED_POLYGON
+
−#include "polygon.h"
+
−#endif
+
−
+
−class Demonstration{
+
− public:
+
−  Polygon *list;
+
−  void (Demonstration::*action_demo)();
+
−
+
−  Demonstration();
+
−  //~Demonstration();
+
−  void test_init();
+
−  void test_play();
+
−  void test_end();
+
−};
+
−
+
−#endif