Get an FTP directory listing

This example just fetches the FTP directory output from the given URL andsends it to stdout. The trailing slash in the URL is what makes libcurl treatit as a directory.

#include <curl/curl.h>int main(void){  CURL *curl;  CURLcode res;  curl_global_init(CURL_GLOBAL_DEFAULT);  curl = curl_easy_init();  if(curl) {    /*     * Make the URL end with a trailing slash     */    curl_easy_setopt(curl, CURLOPT_URL, "ftp://ftp.example.com/");    res = curl_easy_perform(curl);    /* always cleanup */    curl_easy_cleanup(curl);    if(CURLE_OK != res) {      /* we failed */      fprintf(stderr, "curl told us %d\n", res);    }  }  curl_global_cleanup();  return 0;}