int arr[] = {1,2,3};
std::for_each(std::begin(arr), std::end(arr), [](int n) {std::cout << n << std::endl;});
auto is_odd = [](int n) {return n%2==1;};
auto pos = std::find_if(std::begin(arr), std::end(arr), is_odd);
if(pos != std::end(arr))
std::cout << *pos << std::endl;
прочтите
