code: for my var

l03.cpp

@@ -72,19 +72,26 @@ Input download(const string &address)
         if (curl)
         {
             CURLcode res;
+            double total;
             curl_easy_setopt(curl, CURLOPT_URL, address.c_str());
             curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
             curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
-            res = curl_easy_perform(curl);
 
-            // res = curl_easy_perform(curl);
+            res = curl_easy_perform(curl);
 
             if (res != CURLE_OK)
             {
+
                 fprintf(stderr, "curl_easy_perform() failed: %s\n",
                         curl_easy_strerror(res));
                 exit(1);
             }
+
+            if (CURLE_OK == res)
+            {
+                res = curl_easy_getinfo(curl, CURLINFO_TOTAL_TIME, &total);
+                cerr << "Time spending for downloading file: " << total << endl;
+            }
             curl_easy_cleanup(curl);
         }
     }
@@ -92,7 +99,6 @@ Input download(const string &address)
     return input_data(buffer, false);
 }
 
-
 int main(int argc, char *argv[])
 {
     Input input;