Как записать структуру в файл и считать ее из нее

#include "stdafx.h"
#include <iostream>
#include <stdio.h>
#include <conio.h>
#include <string.h>
#include <fstream>
#define file "D:\\file.txt"
 
using namespace std;
 
struct students   //sozdanie strukturi
{
    char*surname;  //tyt hranit`sya familiya
    int number;//nomer gruppi   
    char *sex;  //pol
 
};
 
int main()
{
 
    setlocale(LC_ALL, "Russian");
 
    students student1;//Объявляем структуру student1, тип которой mystruct   Students(obyav,yaem strukturu student1,tip kotorou` student1)
 
    student1.surname = "Petrov";//
    student1.number = 1;
    student1.sex = "Male";
 
    cout << "Surname: " << student1.surname << endl;
    cout << "Number: " << student1.number << endl;
    cout << "Sex:" << student1.sex << endl;
    //cout << "the array of scores:" << student1[i].mass << endl;
    cout << "-------------------" << endl;
 
    students student2;//?????? ????????? Students
 
    student2.surname = "Ivanov";//
    student2.number = 1;
    student2.sex = "Male";
 
    cout << "Surname: " << student2.surname << endl;
    cout << "Number: " << student2.number << endl;
    cout << "Sex:" << student2.sex << endl;
 
    cout << "-------------------" << endl;
 
    students student3;//  объект Students
 
    student3.surname = "Sidorova";//
    student3.number = 2;
    student3.sex = "Female";
 
    cout << "Surname: " << student3.surname << endl;
    cout << "Number: " << student3.number << endl;
    cout << "Sex:" << student3.sex << endl;
    cout << "-------------------" << endl;
    
    students student4;//объект Students
 
    student4.surname = "Zueva";//
    student4.number = 2;
    student4.sex = "Female";
 
    cout << "Surname: " << student4.surname << endl;
    cout << "Number: " << student4.number << endl;
    cout << "Sex:" << student4.sex << endl;
    cout << "-------------------" << endl;
 
    students student5;//объект Students
 
    student5.surname = "Orlova";//
    student5.number = 3;
    student5.sex = "Female";
 
    cout << "Surname: " << student5.surname << endl;
    cout << "Number: " << student5.number << endl;
    cout << "Sex:" << student5.sex << endl;
    
    FILE*fp;
    fp = fopen(file,)
    
    
    _getch();
 
}

#include <stdio.h>
#include <string.h>
struct students {
    char surname[32];
    int number;
    bool sex;
    void output(FILE *fout) {
        if (ftell(fout)) fputs("-------------------\n", fout);
        fprintf(fout, "Surname: %s\nNumber: %d\nSex: %s\n", surname, number, sex ? "Female" : "Male");
    }
    void setname(const char s[]) {
        strncpy(surname, s, 32);
    }
};
int main() {
    students student1, student2, student3, student4, student5;
    student1.setname("Petrov"), student1.number = 1, student1.sex = 0;
    student2.setname("Ivanov"), student2.number = 1, student2.sex = 0;
    student3.setname("Sidorova"), student3.number = 2, student3.sex = 1;
    student4.setname("Zueva"), student4.number = 2, student4.sex = 1;
    student5.setname("Orlova"), student5.number = 3, student5.sex = 1;
    FILE *fout;
    fout = fopen("out.txt", "w");
    student1.output(fout);
    student2.output(fout);
    student3.output(fout);
    student4.output(fout);
    student5.output(fout);
    return 0;
}