c++ Variadic Template Class

I have a problem running this code All i am trying to do is creating a variadic template class that can give me sum of all the elements that are passed, (eg. 1,2,3,4,5,6 should give 21) whether its int or float, i could basically do it with two template functions recursively for which im getting the answer correctly but when im implementing it in class it doesnt give me answer

template <typename T>
class Myclass
{

public:

    T sum;

    T func(T A,T... B)
    {
        sum+=A;
        func(B...);

    }

    T func(T A)
    {
        sum+=A;
        return sum;
    }

};


int main()
{

    Myclass<int> myclass;
    cout<<myclass.func(12,11,11,23);

    return 0;
}