[cUrl] Zapis do pliku

#include <iostream>
#include <conio.h>
#include <fstream>
#include <curl/curl.h>
using namespace std;

CURL * curl;
CURLcode result;
fstream plik;
static char errors[ CURL_ERROR_SIZE ];
static string bufor;

static int writer( char * data, size_t size, size_t nmemb, string * bufor ) {
    int res = 0;
    if( bufor != NULL ) {
        bufor->append( data, size * nmemb );
        res = size * nmemb;
    }
    return res;
}

int main() {
    string url = "";
    string filename = "";
    cout << "wprowadz URL" << endl;
    getline( cin, url );
    cout << "nazwij plik" << endl;
    getline( cin, filename );
    cout << "press any key to start downloading file" << endl;
    getch();
    cout << "started.." << endl;
    curl = curl_easy_init();
    if( curl ) {
        curl_easy_setopt( curl, CURLOPT_ERRORBUFFER, errors );
        curl_easy_setopt( curl, CURLOPT_URL, const_cast < char *>( url.c_str() ) );
        curl_easy_setopt( curl, CURLOPT_HEADER, 0 );
        curl_easy_setopt( curl, CURLOPT_FOLLOWLOCATION, 1 );
        curl_easy_setopt( curl, CURLOPT_WRITEFUNCTION, writer );
        curl_easy_setopt( curl, CURLOPT_WRITEDATA, & bufor );
        result = curl_easy_perform( curl );
        curl_easy_cleanup( curl );
        if( result == CURLE_OK ) {
            plik.open( filename.c_str(), ios::out | ios::binary );
            plik.write( const_cast < char *>( bufor.c_str() ), bufor.length() );
            plik.close();
            cout << "downloaded!" << endl;
        } else cout << "error[" << result << "] -> " << errors;
       
    } else cout << "main error!";
   
    getch();
    return 0;
}