#include <iostream>
#include <string>

 using namespace std;

 class komunikator{
     public:
 virtual ostream& wyswietl (ostream& out) const=0;
 virtual ~komunikator(){};
 };

 class k1 : public komunikator{
protected:
    string* text;
public:

    k1():text(new string("brak")){};
    k1(const string& a):text(new string(a)){};
    k1(const k1& a):text(new string(*a.text)){};

     k1& operator = (const k1& a) {
        if(this != &a) {
            delete text;
            text = new string(*a.text);
        }
        return *this;
    }

    ~k1(){delete text;}
    ostream& wyswietl (ostream& out) const {return out<<*text;};
 };

 class k2:public komunikator{
     protected:
 string* text;
 int wartosc;
 public:
     k2():text(new string("brak")),wartosc(0){};
     k2(const string& a,int b):text(new string(a)),wartosc(b){};


     ~k2(){delete text;};
     ostream& wyswietl (ostream& out) const {return out<<*text<<" "<<wartosc<<endl;};
 };



 int main(){
 const k1 koniec("Koniec komunikatow");

    komunikator* linia [5];
    linia[0] = new k1("Temperatura powietrza:");
    linia[1] = new k2("Czestochowa", -5);
    linia[2] = new k1("Opady sniegu:");
    linia[3] = new k2("Katowice", 10);
    linia[4] = new k1(koniec);


    for(int i=0; i<5; ++i){
        cout << *linia[i];

 return 0;
 }