Problem with vector function and STL template

Question

I would like to make a function that manipulates a vector to select it, and return it. (It would be best to return an iterator that points to this choice.)

Ok, I have this code here in my header:

class Ecran { // That means Screen in french :P
    // Other definitions...

    template<typename T>
    static T* SelectFrom(vector<T> & v);
}

Implementation:

template <class T>
T* Ecran::SelectFrom(vector<T> &v){
    int max = v.size();
    cout << "Veuillez selectionner un objet parmis les suivants:" << endl << endl;

    cout << "0) Aucun" << endl;
    for (int i = 1; i <= max; i++){
        cout << i << ") " << v[i-1] << endl;
    }

    bool isValid = false;
    string raw;
    int input;
    while (!isValid){
       raw = GetWord();
       input = atoi(raw.c_str());
       if( (input >= 0) && (input <= max)){
           isValid = true;
       }
    }
    if (input == 0){
        return 0;
    }
    return & (v[input -1]);
}

So here is the problem: when I use it, the compiler tells me that:

undefined link to `Club * Ecran :: SelectFrom (std :: vector> &)

I use it like this:

Club * toDel = Ecran::SelectFrom(_clubs);

To this, any help would be greatly appreciated. Also, there would be a way to do this, but return an iterator instead of a point in T?

Thanks already.

Answer 1

, , - , , , , .h/.cpp. ++ , , , .

++ , . .cpp , . , , , ; , , . , , , . , .cpp, , , , , , .

Answer 2

, , .

std::vector<T>::iterator :

return v.begin() + input - 1;