RealEstate : inheritance

#include<iostream>
#include<cstring>
using namespace std;
class RealEstate {
protected:
    char*address;
    int area;
    int price;
    void copy(const RealEstate &r) {
        this->address=new char[strlen(r.address)+1];
        strcpy(this->address,r.address);
        this->area=r.area;
        this->price=r.price;
    }
public:
    RealEstate(char *address="",int area = 0 , int price = 0) {
        this->address=new char[strlen(address)+1];
        strcpy(this->address,address);
        this->area=area;
        this->price=price;

    }
    RealEstate(const RealEstate &r) {
        copy(r);
    }
    RealEstate &operator=(const RealEstate &r) {
        if(this!=&r) {
            delete [] address;
            copy(r);
        }
        return *this;

    }
    int Price () {
        return this->area*this->price;
    }
    void print() {
        cout<<address<<", Kvadratura: "<<area<<", Cena po Kvadrat: "<<price<<endl;
    }

    float estateTax() {
        return Price() * 0.05;
    }

    friend istream &operator>>(istream &in , RealEstate &r) {
        in>>r.address>>r.area>>r.price;
        return in;
    }
    char *getAddress() {
        return this->address;
    }


    ~RealEstate() {
        delete [] address;
    }
};

class Villa :public RealEstate {
protected:
    int tax;
public:

    Villa(char *address="",int area = 0 , int price = 0 , int tax= 0):RealEstate(address,area,price) {
        this->tax=tax;

    }

    void print() {
        cout<<address<<", Kvadratura: "<<area<<", Cena po Kvadrat: "<<price<<", Danok na luksuz: "<<tax<<endl;
    }
    int estateTax() {
        return RealEstate::estateTax()+(area*price*tax/100);
    }
    friend istream &operator>>(istream &in , Villa &v) {
        in>>v.address>>v.area>>v.price>>v.tax;
        return in;
    }

};

int main() {
    RealEstate re;
    Villa v;
    cin >> re;
    cin >> v;
    re.print();
    // cout<<"test1"<<endl;
    cout << "Danok za: " << re.getAddress() << ", e: " << re.estateTax() << endl;
    v.print();
    // cout<<"test2"<<endl;
    cout << "Danok za: " << v.getAddress() << ", e: " << v.estateTax() << endl;
    return 0;
}