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  1. template<typename T>
  2. class Vector2D
  3. {
  4. public:
  5. 	explicit Vector2D(): x(0), y(0)
  6. 	{
  7. 	}
  8.  
  9. 	explicit Vector2D(const T x_, const T y_): x(x_), y(y_)
  10. 	{
  11. 	}
  12.  
  13.     template<typename U>
  14.     Vector2D(const Vector2D<U>& v): x(T(v.x)), y(T(v.y))
  15. 	{
  16. 	}
  17.  
  18.     union
  19. 	{
  20. 		struct { T x, y; };
  21. 		struct { T i, j; };
  22. 	};
  23. };
  24.  
  25. int main(int argc, char* argv[])
  26. {
  27.     Vector2D<int> v1(1, 2);
  28.     Vector2D<float> v2(v1);
  29.  
  30.     return 0;
  31. }
Success #stdin #stdout 0s 2892KB
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https://ideone.com/HNr53x
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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