lab4 обработка ошибок curl

sem2_lab1/sem2_lab1.cpp

@@ -29,12 +29,19 @@ Input input_data(istream& in,bool prompt)
 }
 int main(int argc, char* argv[])
 {
-    if (argc > 1) {
+    if (argc > 1) 
+    {
         CURL* curl = curl_easy_init();
-        if (curl) {
+        if (curl) 
+        {
             CURLcode res;
             curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
             res = curl_easy_perform(curl);
+            if (res != CURLE_OK)
+            {       
+                    fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res));
+                    exit(1);
+            }
          curl_easy_cleanup(curl);
          cout << res <<endl ;
         }