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  1. #include <iostream>
  2. #include <type_traits>
  3.  
  4. template < typename T, size_t N >
  5. constexpr size_t countof(T (&arr)[N])
  6. {
  7.     return N;
  8. }
  9.  
  10. int main() {
  11. 	// your code goes here
  12. 	int array[10];
  13. 	int array2[countof(array)];
  14.  
  15. 	std::cout << countof(array) << std::endl;
  16. 	std::cout << sizeof array/sizeof array[0] << std::endl;
  17.  
  18. 	return 0;
  19. }
Success #stdin #stdout 0s 3468KB
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stdin 
Standard input is empty
stdout 
10
10
https://ideone.com/phgInn
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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