Перегрузка >> для масива

#include <iostream>
#include <fstream>
#include <string>
using namespace std;
ifstream filein("file.txt");
ofstream fileout("errors.txt");
 
 
class Product {
protected:
    string name, producer;
    float price;
    int day, mounth, year;
public:
    Product();
    Product(string n, string p, float pr, int d, int m, int y);
    Product(const Product& l);
    friend istream& operator>>(istream& in, Product& l);
    friend ostream& operator<<(ostream& out, Product& l);
};
 
Product::Product() :name(""), producer(""), price(0), day(0), mounth(0), year(0) {};
Product::Product(string n, string p, float pr, int d, int m, int y) {
    name = n;
    producer = p;
    price = pr;
    day = d;
    mounth = m;
    year = y;
}
Product::Product(const Product& l) {
    name = l.name;
    producer = l.producer;
    price = l.price;
    day = l.day;
    mounth = l.mounth;
    year = l.year;
}
istream& operator>>(istream& in, Product& l) {
    in >> l.name >> l.producer >> l.price >> l.day >> l.mounth >> l.year;
    if (l.price < 0) {
        fileout << "The price of " << l.name << " was less than zero. ";
        cout << "ERROR! Enter a new price of " << l.name << " : ";
        while (l.price < 0) {
            cin >> l.price;
        }
        fileout << "It was changed on - " << l.price << endl;
    }
    if (l.day < 0 || l.day > 31) {
        fileout << "The day of " << l.name << " was less than zero or bigger than thirty one. ";
        cout << "ERROR! Enter a new day of " << l.name << " : ";
        while (l.day < 0 || l.day > 31) {
            cin >> l.day;
        }
        fileout << "It was changed on - " << l.day << endl;
    }
    if (l.mounth < 0 || l.mounth > 12) {
        fileout << "The mounth of " << l.name << " was less than zero or bigger than twelve. ";
        cout << "ERROR! Enter a new mounth of " << l.name << " : ";
        while (l.mounth < 0 || l.mounth > 12) {
            cin >> l.mounth;
        }
        fileout << "It was changed on - " << l.mounth << endl;
    }
    if (l.year < 0 || l.year > 2020) {
        fileout << "The year of " << l.name << " was less than zero or bigger than two thousand and twenty. ";
        cout << "ERROR! Enter a new year of " << l.name << " : ";
        while (l.year < 0 || l.year > 2020) {
            cin >> l.year;
        }
        fileout << "It was changed on - " << l.year << endl;
    }
    return in;
}
ostream& operator<<(ostream& out, Product& l) {
    cout << "Name - " << l.name << endl
        << "Producer - " << l.producer << endl
        << "Price - " << l.price << "$" << endl
        << "Date - " << l.day << "." << l.mounth << "." << l.year << endl << endl;
    return out;
}
 
class FarmProduct : public Product {
protected:
    string category;
public:
    FarmProduct();
    FarmProduct(string n, string p, float pr, int d, int m, int y, string c);
    FarmProduct(const FarmProduct& l);
    friend istream& operator>>(istream& in, FarmProduct& l);
    friend ostream& operator<<(ostream& out, FarmProduct& l);
 
};
 
FarmProduct::FarmProduct() :category(""), Product() {}
FarmProduct::FarmProduct(string n, string p, float pr, int d, int m, int y, string c) : Product(n, p, pr, d, m, y) {
    category = c;
}
FarmProduct::FarmProduct(const FarmProduct& l) : Product(l) {
    category = l.category;
}
istream& operator>>(istream& in, FarmProduct& l){
    in >> l.name >> l.producer >> l.price >> l.day >> l.mounth >> l.year >> l.category;
    if (l.price < 0) {
        fileout << "The price of " << l.name << " was less than zero. ";
        cout << "ERROR! Enter a new price of " << l.name << " : ";
        while (l.price < 0) {
            cin >> l.price;
        }
        fileout << "It was changed on - " << l.price << endl;
    }
    if (l.day < 0 || l.day > 31) {
        fileout << "The day of " << l.name << " was less than zero or bigger than thirty one. ";
        cout << "ERROR! Enter a new day of " << l.name << " : ";
        while (l.day < 0 || l.day > 31) {
            cin >> l.day;
        }
        fileout << "It was changed on - " << l.day << endl;
    }
    if (l.mounth < 0 || l.mounth > 12) {
        fileout << "The mounth of " << l.name << " was less than zero or bigger than twelve. ";
        cout << "ERROR! Enter a new mounth of " << l.name << " : ";
        while (l.mounth < 0 || l.mounth > 12) {
            cin >> l.mounth;
        }
        fileout << "It was changed on - " << l.mounth << endl;
    }
    if (l.year < 0 || l.year > 2020) {
        fileout << "The year of " << l.name << " was less than zero or bigger than two thousand and twenty. ";
        cout << "ERROR! Enter a new year of " << l.name << " : ";
        while (l.year < 0 || l.year > 2020) {
            cin >> l.year;
        }
        fileout << "It was changed on - " << l.year << endl;
    }
    return in;
}
ostream& operator<<(ostream& out, FarmProduct& l) {
    cout << "Name - " << l.name << endl
        << "Producer - " << l.producer << endl
        << "Price - " << l.price << "$" << endl
        << "Date - " << l.day << "." << l.mounth << "." << l.year << endl
        << "Category - " << l.category << endl << endl;
    return out;
}
 
 
 
 
 
int main(){
    int size;
    filein >> size;
    Product** mas = new Product * [size];
    for (int i = 0; i < size; i++) {
        filein >> mas[i];        // ошибка
    }
}