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  1. #include <iostream>
  2.  
  3. class Vector3d
  4. {
  5. private:
  6. 	double m_x, m_y, m_z;
  7. 	friend class Point3d;
  8. public:
  9. 	Vector3d(double x = 0.0, double y = 0.0, double z = 0.0)
  10. 		: m_x(x), m_y(y), m_z(z)
  11. 	{
  12.  
  13. 	}
  14.  
  15. 	void print()
  16. 	{
  17. 		std::cout << "Vector(" << m_x << " , " << m_y << " , " << m_z << ")\n";
  18. 	}
  19. };
  20.  
  21.  
  22. class Point3d
  23. {
  24. private:
  25. 	double m_x, m_y, m_z;
  26.  
  27. public:
  28. 	Point3d(double x = 0.0, double y = 0.0, double z = 0.0)
  29. 		: m_x(x), m_y(y), m_z(z)
  30. 	{
  31.  
  32. 	}
  33.  
  34. 	void print()
  35. 	{
  36. 		std::cout << "Point(" << m_x << " , " << m_y << " , " << m_z << ")\n";
  37. 	}
  38.  
  39. 	void moveByVector(Vector3d &v);
  40. };
  41.  
  42. void Point3d::moveByVector(Vector3d& v)
  43. {
  44. 	m_x += v.m_x;
  45. 	m_y += v.m_y;
  46. 	m_z += v.m_z;
  47. }
  48.  
  49. int main() 
  50. {
  51. 	Point3d p(1.0, 2.0, 3.0);
  52. 	Vector3d v(2.0, 2.0, -3.0);
  53.  
  54. 	p.print();
  55. 	p.moveByVector(v);
  56. 	p.print();
  57.  
  58. 	return 0;
  59. }
Success #stdin #stdout 0s 3468KB
comments (?)
stdin 
Standard input is empty
stdout 
Point(1 , 2 , 3)
Point(3 , 4 , 0)
https://ideone.com/pMnXpB
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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