Не пойму в чем проблема!

#include<iostream>
#include<string>
#include<fstream>
using namespace std;
//////////Классы Работник и Отец семейства/////////////
class Worker {
protected:
    string *job;
public:
    Worker(){ }
    Worker(int i) 
    {
        cout << "I'm a worker!" << endl;
        job = new string;
    }
    Worker(Worker &obj) 
    {
        job = new string;
        this->job = obj.job;
    }
    virtual ~Worker() 
    {
        delete job;
    }
    friend ostream& operator<<(ostream &os,const Worker &obj);
    friend istream& operator>>(istream &is, Worker &obj);
};
ostream& operator<<(ostream &os, const Worker &obj)
{
    os << obj.job << endl;
    return os;
}
istream& operator>>(istream &is, Worker &obj)
{
    is >> obj.job;
    return is;
}
class Father {
protected:
    string *child;
public:
    Father(){ }
    Father(int i) 
    {
        cout << "I'm a father!" << endl;
        child = new string;
    }
    Father(Father &obj)
    {
        child = new string;
        this->child = obj.child;
    }
    virtual ~Father()
    {
        delete child;
    }
    friend ostream& operator<<(ostream &os, const Father &obj);
    friend istream& operator>>(istream &is, Father &obj);
};
ostream& operator<<(ostream &os, const Father &obj)
{
    os << obj.child << endl;
    return os;
}
istream& operator>>(istream &is, Father &obj)
{
    is >> obj.child;
    return is;
}
/////////Класс наследованный от классов Работник и Отец семейства//////////
class Worker_Father : public Worker, public Father
{
public:
    Worker_Father() :Worker(), Father() 
    {
        cout << "I'm a worker and father!" << endl;
        child = new string;
        job = new string;
    }
    Worker_Father(Worker_Father &obj)
    {
        job = new string;
        child = new string;
        this->job = obj.job;
        this->child = obj.child;
    }
    virtual ~Worker_Father()
    {
        delete job;
        delete child;
    }
    friend ostream& operator<<(ostream &os, const Worker_Father &obj);
    friend istream& operator>>(istream &is, Worker_Father &obj);
};
ostream& operator<<(ostream &os, const Worker_Father &obj)
{
    os<< obj.job<<", "<< obj.child << endl;
    return os;
}
istream& operator>>(istream &is, Worker_Father &obj)
{
    is>> obj.job >> obj.child;
    return is;
}
////////////функия main//////////////
int main()
{
    Worker* w=new Worker(0);
    Father* f=new Father(0);
    Worker_Father* wf=new Worker_Father;
    cout << endl;
    cout << "Input job for worker : ";
    cin >> w;
    cout << "job for worker : " << w<<endl;
    cout << "Input child for father : ";
    cin >> f;
    cout << "child for father : " << f<<endl;
    cout << "Input job and child for worker and father : "<<endl;
    cin >> wf;
    cout << "job and child for worker and father : " << wf << endl;
    delete w;
    delete f;
    delete wf;
    system("pause");
}

Worker(const Worker &obj) 
: job(obj.job)   
{
//        job = new string;
//        this->job = obj.job;
}

*child=*(obj->child);

    Father(Father &obj)
    {
        child = new string;
        this->child = obj.child;
    }