Добавил проверку ошибок

main.cpp

@@ -38,11 +38,20 @@ input_data(istream& inn, bool promt) {
 
 int main(int argc, char* argv[]) {
     curl_global_init(CURL_GLOBAL_ALL);
-       if (argc > 1){
-                              cout << argc << endl;
-            for(size_t i = 0; i < argc; i++){
-        cout << "argv[" << i << "] = " << argv[0] << endl;
+    if (argc > 1)
+    {
+        CURL *curl = curl_easy_init();
+        if(curl)
+        {
+            CURLcode res;
+            curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
+            res = curl_easy_perform(curl);
+            curl_easy_cleanup(curl);
+            if (res != CURLE_OK){
+                cout << curl_easy_strerror;
+                exit(1);
             }
+        }
         return 0;
     }
     auto in = input_data(cin, true);