Перегрузка операторов ввода и вывода в бинарный файл

#include "stdafx.h"
#include <iostream>
#include <fstream>  
 
using namespace std;
 
class Doll {
public:
    char name[20];
    int amount;
    int number;
 
    Doll()
    {
        strcpy_s(name, "");
        amount = 0;
        number = 0;
    }
    Doll(const char* pname, int pamount, int pnumber)
    {
        strcpy_s(name, pname);
        amount = pamount;
        number = pnumber;
    }
 
    friend istream& operator>> (istream &in, Doll &doll);
    friend ostream& operator<< (ostream &out, const Doll &doll);
    friend fstream& operator>> (fstream& in, Doll& obj);
    friend fstream& operator<< (fstream& out, const Doll& obj);
 
    void bwrite(Doll d)
    {       
        ofstream fout;
        fout.open("data.dat", ios::binary);
        fout << d;  
    }
};
 
istream& operator >> (istream &in, Doll &doll) {
    in >> doll.name;
    in >> doll.amount;
    in >> doll.number;
    return in;
}
 
ostream& operator<< (ostream &out, const Doll &doll) {
    out << "doll " << doll.name << ", " << doll.amount << ", " << doll.number;
    return out;
}
 
fstream& operator>> (fstream& in, Doll& doll) {
    in.read(reinterpret_cast<char*> (&doll), sizeof(doll));
    return in;
}
fstream& operator<< (fstream& out, const Doll& doll) {
    out.write(reinterpret_cast<char*>(&doll), sizeof(doll));
    return out;
}
 
int main()
{
    setlocale(LC_ALL, "Russian");
    Doll d("doll", 1, 2);
    d.bwrite(d);
    system("pause");
}

fstream& operator<< (fstream& out, const Doll& doll) {
    out.write(reinterpret_cast<const char*>(&doll), sizeof(doll)); // И никто больше не ругается.
    return out;
}