nadtaryf.h

#pragma once
#include"taryf.h"
using namespace std;
class NadTaryf :public Taryf {
protected:
    static double zahwylynu;
    unsigned time;
public:
    NadTaryf():Taryf(),time(0){}
    NadTaryf(string n1, string m1, double c1,unsigned t): Taryf(n1,m1,c1), time(t){}
    NadTaryf(const NadTaryf& n): Taryf(n),time(n.time){}

    double get_suma() const {
        return (cost + (time * zahwylynu));
    }

    friend ostream& operator<<(ostream& out, const NadTaryf& n) {
        out << (Taryf&)n << "Borg:" << n.time << "m" << "\t" << "Do splaty:" << n.get_suma() << endl;
        return out;
    }
    friend istream& operator>>(istream& in, NadTaryf&n) {
        in >> (Taryf&)n;
        in >> n.time;
        return in;
    }
    void print() const {
        Taryf::print();
        cout << "Borg:" << time << "m" << "\t" << "Do splaty:" << NadTaryf::get_suma() << endl;
    }
};