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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. template <int one, int two, int three>
  5. struct vector_c{
  6. 	enum{
  7. 	v1 = one,
  8. 	v2 = two,
  9. 	v3 = three,
  10. 	sum = one+two+three
  11. 	};
  12.  
  13. 	template <typename vector>
  14. 	struct sumVector{
  15. 		typedef vector_c<
  16. 			one+vector::v1,
  17. 			two+vector::v2,
  18. 			three+vector::v3
  19. 		> type;
  20. 	};
  21.  
  22. 	template <typename anotherVector>
  23. 	struct multiplyByVector{
  24. 		typedef vector_c<
  25. 			one*anotherVector::v1,
  26. 			two*anotherVector::v2,
  27. 			three*anotherVector::v3
  28. 		> type;
  29. 	};
  30. };
  31.  
  32.  
  33. int main() {
  34. 	int a = vector_c<1,2,3>::sumVector<vector_c<3,2,1> >::type::sum;
  35.  
  36. 	vector_c<3,2,1>::multiplyByVector<vector_c<2,3,1> >::type::sum ;
  37.  
  38. 	return 0;
  39. }
Success #stdin #stdout 0s 2680KB
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https://ideone.com/9BQ2FI
language:
C++ 4.3.2 (gcc-4.3.2)
created:
9 years ago
visibility:
public

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