#include <stdio.h>
#include <curl/curl.h>
size_t write_callback(void contents, size_t size, size_t nmemb, void userp) {
size_t realsize = size * nmemb;
FILE fp = (FILE )userp;
return fwrite(contents, size, nmemb, fp);
}
int main() {
CURL *curl;
CURLcode res;
curl_global_init(CURL_GLOBAL_DEFAULT);
curl = curl_easy_init();
if(curl) {
FILE *fp = fopen("downloaded_file.txt", "wb");
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/file-to-download.txt");
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, fp);
res = curl_easy_perform(curl);
curl_easy_cleanup(curl);
fclose(fp);
}
curl_global_cleanup();
return 0;
}