#include <iostream>
#include <functional>

class Item;
typedef  std::function<void(int, const Item&)> Action;

class Item 
{
public:
    Item(Action act, int y) : action_(act), y_(y){}
    void do_action(int x){action_(x, *this);}
    int y_;
private:
    Action action_;
};

int main()
{
    Action a = [](int x, const Item& item) {std::cout << "Wert x:  " << x << " Wert y: " << item.y_ << "\n";};
    Item it1(a, 3);
    Item it2(a, 9000);
    it1.do_action(5);
    it2.do_action(55);
}