template<class T1, class T2>
void zpracuj(T1 x, T2 y);


class Ukazka {
    friend void zpracuj <>(double&, double&);
    friend void zpracuj <char>(char, int);
    friend void zpracuj <char>(char&, int); // Nelze
    friend void zpracuj<>(int, long){/* ... */} // Nelze
};
