Unnamed

#ifndef ZSAK_H#define ZSAK_H#include <list>#include <iostream>using namespace std;enum Hibak {NemLetezoElem};struct lista_elemei{    int elem;    int m;};class Zsak{    public:        Zsak() {};        void add(int &elem_, int m_=1);        void remove(int &elem_);        int mul(int &elem_);        istream& operator>> (istream &be);        ostream& operator<< (ostream &ki);        list<lista_elemei> lista;        friend Zsak unio(Zsak zsak1, Zsak zsak2);    private:        list<lista_elemei>::iterator find(const int &elem_);};#endif