student.h overload

#pragma once
#ifndef student_h
#define student_h
#include <string>


struct student {
    int nr_indeksu;
    std::string FirstName, LastName;
    int wiek;
    char gender; //M or K

    student()
    {
        nr_indeksu = 0;
        FirstName = "none";
        LastName = "none";
        wiek = 18;
        gender = 'N';
    }

    student(int nr_indeksu, std::string FirstName, std::string LastName, int wiek, char gender)
    {
        this -> FirstName = FirstName;
        this -> LastName = LastName;
        this -> wiek = wiek;
        this -> gender = gender;
    }
};

std::istream& operator >> (std::istream &in, student& temp)
{
    in >> temp.nr_indeksu >> temp.FirstName >> temp.LastName >> temp.wiek >> temp.gender;
    return in;
}

std::ostream& operator << (std::ostream &out, student& temp)
{
    out << temp.nr_indeksu << " " << temp.FirstName << " " << temp.LastName << " " << temp.wiek << " " << temp.gender << "\n";
    return out;
}

std::ofstream& operator << (std::ofstream &zapis, student& temp)
{
    zapis << temp.nr_indeksu << " " << temp.FirstName << " " << temp.LastName << " " << temp.wiek << " " << temp.gender << "\n";
    return zapis;
}

std::ifstream& operator >> (std::ifstream &odczyt, student& temp)
{
    odczyt >> temp.nr_indeksu >> temp.FirstName >> temp.LastName >> temp.wiek >> temp.gender;
    return odczyt;
}

#endif