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  1. #include <iostream>
  2. #include <functional>
  3. #include <map>
  4.  
  5. int main(int argc, char *argv[]) {
  6. 	std::function<bool(int, int)> cmp;
  7. 	if (argc > 2) cmp = std::less<int>{};
  8. 	else cmp = std::greater<int>{};
  9. 	std::multimap<int, int, decltype(cmp)> map(cmp);
  10. 	map.emplace(1, 1);
  11. 	map.emplace(2, 2);
  12. 	map.emplace(3, 3);
  13. 	for (auto p: map) {
  14. 		std::cout << p.first << " ";
  15. 	}
  16. 	std::cout << std::endl;
  17. 	return 0;
  18. }
Success #stdin #stdout 0s 3464KB
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https://ideone.com/cP0OEm
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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