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  1. #include <iostream>
  2.  
  3. class Drawable
  4. {
  5. public:
  6.     int x;
  7.     int y;
  8. 	virtual void move() {};
  9. 	Drawable()
  10. 	{
  11. 		x = 0;
  12. 		y = 0;
  13. 	}
  14. };
  15.  
  16. class Ball : public Drawable
  17. {
  18. public:
  19. 	Ball() {}
  20. 	void move()
  21. 	{
  22. 		x += 1;
  23. 		y += 1;
  24. 	}
  25. };
  26.  
  27. int main()
  28. {
  29. 	Drawable *ball = new Ball();
  30.  
  31. 	Drawable* drawableArray1[1];
  32. 	drawableArray1[0] = ball;
  33.  
  34. 	Drawable* drawableArray2 = new Drawable[1];
  35. 	drawableArray2[0] = *ball;
  36.  
  37. 	std::cout << drawableArray1[0]->x << std::endl;		// 0
  38. 	std::cout << drawableArray2[0].x << std::endl;		// 0
  39.  
  40. 	ball->move();
  41.  
  42. 	std::cout << drawableArray1[0]->x << std::endl;		// 1
  43. 	std::cout << drawableArray2[0].x << std::endl;		// 0
  44.  
  45. 	return 0;
  46. }
Success #stdin #stdout 0s 3428KB
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https://ideone.com/pTNNfV
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
public

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