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  1. #include <algorithm>
  2. #include <iostream>
  3. #include <vector>
  4.  
  5. class EvenNumberPredicate {
  6. public:
  7. 	bool operator()(int number) const
  8. 	{
  9. 		return number % 2 == 0;
  10. 	}
  11. };
  12.  
  13. int main()
  14. {
  15. 	std::vector<int> vec;
  16. 	vec.push_back(7);
  17. 	vec.push_back(2);
  18. 	vec.push_back(3);
  19. 	vec.push_back(8);
  20. 	vec.push_back(4);
  21. 	vec.push_back(1);
  22. 	std::cout << std::count_if(vec.begin(), vec.end(), EvenNumberPredicate()) << std::endl;
  23. 	return 0;
  24. }
Success #stdin #stdout 0s 3460KB
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https://ideone.com/0oRxOn
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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