diff --git a/main.cpp b/main.cpp
index 47c5a81..0e7cbc3 100644
--- a/main.cpp
+++ b/main.cpp
@@ -71,8 +71,12 @@ input_data(istream& in, bool promt)
 
 
 
-int main()
+int main(int argc, char* argv[])
 {
+    if (argc > 1){
+        cout << argc << "argv[0] = " << argv << endl;
+        return 0;
+    }
     curl_global_init(CURL_GLOBAL_ALL);
     auto in = input_data(cin, true);
     auto bins = make_histogram(in.numbers, in.bin_count);