diff --git a/main.cpp b/main.cpp
index 1c49855..dda62d4 100644
--- a/main.cpp
+++ b/main.cpp
@@ -34,13 +34,15 @@ input_data(istream &tin, bool prompt){
     tin >> in.bin_count;
     return in;
 }
-
-
-int main() {
+int main(int argc, char* argv[]) {
+    if (argc > 1){
+        for (size_t i = 0; i < argc; i++)
+            cerr << "argv["<<i<<"]= " << argv[i] << endl;
+        return 0;
+    }
     curl_global_init(CURL_GLOBAL_ALL);
     Input in = input_data(cin, false);
     auto bins = make_histogram(in.numbers, in.bin_count);
     show_histogram_svg(bins);
     return 0;
 }
-