Kolokviumska primer Maraton

#include <iostream>
#include <algorithm>
#include <cstring>
using namespace std;

class Ucesnik {
private:
    char* ime;
    bool pol;
    int vozrast;
public:
    Ucesnik(const char* ime = "", bool pol = false, int vozrast = 0)
    {
        this->ime = new char[strlen(ime) + 1];
        strcpy(this->ime, ime);
        this->pol = pol;
        this->vozrast = vozrast;
    }
    Ucesnik(Ucesnik& ob)
    {
        delete[]this->ime;
        this->ime = new char[strlen(ob.ime) + 1];
        strcpy(this->ime, ob.ime);
        this->pol = ob.pol;
        this->vozrast = ob.vozrast;
    }
    ~Ucesnik()
    {
    delete[]this->ime;
    }
    Ucesnik operator=(Ucesnik& ob)
    {
        if (this != &ob)
        {
            delete[]this->ime;
            this->ime = new char[strlen(ob.ime) + 1];
            strcpy(this->ime, ob.ime);
            this->pol =ob.pol;
            this->vozrast = ob.vozrast;
        }
        return *this;
    }
    int getVozrast()
    {
        return this->vozrast;
    }

    bool operator>(Ucesnik& ob)
    {
        return this->vozrast > ob.vozrast;
    }

    friend ostream& operator<<(ostream& out, Ucesnik& ob)
    {
        out << ob.ime << endl;
        if (ob.pol)
            out << "Maski" << endl;
        else
            out << "Zenski" << endl;
        out << ob.vozrast << endl;
        return out;
    }
};


class Maraton {
private:
    char lokacija[100];
    Ucesnik** niza;
    int br_ucesnici;
public:
    Maraton(char* lokacija = "")
    {
        strcpy(this->lokacija, lokacija);
        this->niza = NULL;
        this->br_ucesnici = 0;
    }
    ~Maraton()
    {
        delete[]this->niza;
    }
    Maraton operator+=(Ucesnik&ob)
    {
        Ucesnik*temp=new Ucesnik[this->br_ucesnici+1];
        copy(this->niza, this->niza + this->br_ucesnici, temp);
        temp[this->br_ucesnici++]=ob;
        delete[]this->niza;
        //this->niza = temp;
        return *this;
    }
    double proscena_vozrast()
    {
        int zbir = 0;
        for (int i = 0; i < this->br_ucesnici; ++i)
        {
            zbir += this->niza[i]->getVozrast();
            return zbir / ((double)(this->br_ucesnici));
        }
    }
    void pecatiPomladi(Ucesnik& u)
    {
        for (int i = 0; i < this->br_ucesnici; ++i)
            if (this->niza[i])
                cout << this->niza[i];
    }
};

int main()
{
    char ime[100];
    bool maski;
    int vozrast;
    int n;

    cin>>n;

    char lokacija[100];
    Maraton m(lokacija);

    Ucesnik **u=new Ucesnik*[n];
    for(int i=0;i<n;i++)
    {
        cin>>ime>>maski>>vozrast;
        u[i]=new Ucesnik(ime,maski,vozrast);

        m+=*u[i];

    }
    m.pecatiPomladi(*u[n-1]);
    cout<<m.proscena_vozrast()<<endl;
    for(int i=0;i<n;i++)
    {
        delete u[i];
    }
    delete []u;
    return 0;
}