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  1. #include <iostream>
  2.  
  3. template <std::size_t SIZE> class A
  4. {
  5. 	char b[SIZE];
  6.  
  7. public:
  8. 	using const_buffer_t = const char (&)[SIZE];
  9. 	using my_type = A<SIZE>;
  10.  
  11. 	A()							: b{} { std::cout << "size: " << SIZE << " ctor 1\n"; }
  12. 	A(const_buffer_t)			: b{} { std::cout << "size: " << SIZE << " ctor 2\n"; }
  13. 	A(const char * const)		: b{} { std::cout << "size: " << SIZE << " ctor 3\n"; }
  14. 	explicit A(const my_type &)	: b{} { std::cout << "size: " << SIZE << " ctor 4\n"; }
  15.  
  16. 	template <std::size_t OTHER_SIZE>
  17. 	A(const char (&)[OTHER_SIZE]) : b{} { std::cout << "size: " << SIZE << " ctor 5\n"; }
  18.  
  19. 	template <std::size_t OTHER_SIZE>
  20. 	explicit A(const A<OTHER_SIZE> &) : b{} { std::cout << "size: " << SIZE << " ctor 6\n"; }
  21. };
  22.  
  23. int main()
  24. {
  25. 	//A<5> a("five");
  26. 	A<5> b("0123456789");
  27. 	//A<9> c(a);
  28. 	A<5> d;
  29. 	A<5> e(d);
  30. 	A<9> f(d);
  31.  
  32. 	return 0;
  33. }
Success #stdin #stdout 0s 3296KB
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stdin
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Standard input is empty
stdout
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size: 5 ctor 3
size: 5 ctor 1
size: 5 ctor 4
size: 9 ctor 6
https://ideone.com/uPRNZH
clase con buffer de tamaño estático como miembro
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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