Работа с файлами

#include <iostream>
#include <fstream>
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
using namespace std;
 
struct Worker
    {
        char name [10];
        float salary;
        int NumberofDepartment;
    };
 
void enter(Worker *);
void print(Worker);
 
void main()
{
    FILE *fp;
    if((fp=fopen("Worker.dat","wb+"))==NULL)
    {
        cout << "Error!\n";
        exit(1);
    }
    Worker Worker,Worker2;
    size_t l=sizeof(Worker);
    enter(&Worker);
    print(Worker);
    int i=20;
    int s=fwrite(&Worker,sizeof(Worker),1,fp);
    enter(&Worker);
    print(Worker);
    i=6;
    s=fwrite(&Worker,sizeof(Worker),1,fp);
    cout << l<<s<<endl;
    fseek(fp,0,SEEK_SET);
    s=fread(&Worker2,sizeof(Worker),1,fp);
    cout << s<<endl;
    print(Worker2);
    fclose(fp);
}
void enter(Worker *c)
{
    cout <<"\nEnter name >"; cin >> c->name;
    cout <<"Enter number of department >"; cin >> c->NumberofDepartment ;
    cout <<"\nEnter salary >"; cin >> c->salary ;
}
void print(Worker c)
{
    cout <<"\nName - "<< c.name;
    cout <<"\nNumber of department - >"<<c.NumberofDepartment ;
    cout <<"\nSalary >"<< c.salary <<endl ;
    getch();
}