[C++] Output binario su file

[kirakira93]

Scusa l'ignoranza ma non sono riuscito a far funzionare il codice, eccolo.

#include <cstdlib>
#include <iostream>

using namespace std;

       struct WebSites
       {
             char SiteName[100];
             int Rank;
       };

int main(int argc, char *argv[])
{
    
    WebSites p_Data;
    fstream binary_file("c:\\Binary.txt",ios::binary|ios::in);
    binary_file.read(reinterpret_cast<char *>(&p_Data),sizeof(WebSites));
    binary_file.close();

    cout<<p_Data.SiteName<<endl;
    cout<<"Rank :"<< p_Data.Rank<<endl;
    system("PAUSE");
    return EXIT_SUCCESS;
} 

output del compilatore (dev-c++ 4.9.9.2)

C:\Users\Niko\Desktop\Dev-c++\main.cpp In function `int main(int, char**)':

16 C:\Users\Niko\Desktop\Dev-c++\main.cpp variable `std::fstream binary_file' has initializer but incomplete type

C:\Users\Niko\Desktop\Dev-c++\Makefile.win [Build Error] [main.o] Error 1

Help.....