UKOL4

#include <iostream>
#include <cmath>
using namespace std;

class Retez {
    char *retez;
public: Retez(const char *r){
    retez = new char[*r+1];
    strcpy(retez, r);
}
    Retez(unsigned n){ //maybe?
        //retez(new char[n]);
        retez = new char[n];
    }
    ~Retez(){ //done
      free(retez); retez = NULL;
    }
    void vypsat(){ //done
        cout << retez << "\n";
    }
    friend Retez *levy(const Retez &, int);
    friend Retez *pravy(const Retez &, int);
    friend Retez *stred(const Retez &r, int m, int n){ //VRACÍ ŘETĚZ!!!!!!!
        Retez novyRetez(n);
        Retez *fRetez;
        fRetez = &novyRetez;



        return fRetez;
    }
};

int main(int argc, const char * argv[]) {



    // insert code here...
    //std::cout << "Hello, World!\n";
    return 0;
}