Download de ficheiro da Web

// Apple Xcode
// download file from web
// gcc -lcurl main.c -o teste


//#define CURL_STATICLIB

#include <stdio.h>
#include <curl/curl.h>


size_t func_write_data(void *the_ptr, size_t the_size, size_t the_nmemb, FILE *the_stream)
{
    size_t the_written = fwrite(the_ptr, the_size, the_nmemb, the_stream);
    return the_written;
}


int main (int argc, const char * argv[])
{
    // realiza o download de um ficheiro da web para o computador
    CURL *the_curl;
    FILE *the_file;
    CURLcode the_curl_code;

    char *the_url = "http://elmicro.com/files/cosmic/clanguage.pdf";
    char the_output_file[FILENAME_MAX] = "/Users/.../Desktop/clanguage.pdf";

    the_curl = curl_easy_init();
    if (the_curl)
    {
        the_file = fopen(the_output_file, "wb");
        curl_easy_setopt(the_curl, CURLOPT_URL, the_url);
        curl_easy_setopt(the_curl, CURLOPT_WRITEFUNCTION, func_write_data);
        curl_easy_setopt(the_curl, CURLOPT_WRITEDATA, the_file);
        the_curl_code = curl_easy_perform(the_curl);
        curl_easy_cleanup(the_curl);
        fclose(the_file);
    }

    return 0;
}