#include <iostream>
#include <vector>
#include <initializer_list>

using namespace std;

class EvenHolder {
    public:

        void CopyIL(initializer_list<int> newData) {
           for(auto x:  newData) {
              if (x%2==0){
                 data.push_back(x);
              }
           }
        }

        EvenHolder(initializer_list<int> newData) {
           CopyIL(newData);
           return;
        }

        void ForceFill(initializer_list<int> newData) {
           data = newData;
           return;
        }

        EvenHolder & operator = (initializer_list<int> other) {
            data.erase(data.begin(), data.end());
            CopyIL(other);
            return * this; 
        }

        void Print(void) const {
           bool first = true;
           for(auto x: data) {
              if(first) {
                 first = false;
              } else {
                 cout << " ";
              }
              cout << x;
           }
           cout << endl;
           return;
        }

    private:
        vector<int> data;
};

int main() {
    EvenHolder a = {1,2,3,4,5,6,7,8};


    a.Print();

    a.ForceFill({1,2,3,4});
    a.Print();

    a = {1,2,3,4,5,6};
    a.Print();

    // this is wierd, will it work?
    for(auto x: {'a','b','d','q'}) {
       cout << x << " ";
    }
    cout << endl;

    return 0;

}