diff --git a/main.cpp b/main.cpp
index 3b88f2e..bccadef 100644
--- a/main.cpp
+++ b/main.cpp
@@ -36,10 +36,20 @@ input_data(istream& _cin){
 
 
 int
-main() {
+main(int argc, char* argv[]) {
+     if (argc > 1) {
+        cerr << "argc = " << argc << endl;
+        for (int i = 0; i < argc; i++){
+            cerr << "argv[" << i << "] = " << argv[i] << endl;
+        }
+        return 0;
+    }
+
     curl_global_init(CURL_GLOBAL_ALL);
     auto in = input_data(cin);
     auto bins = make_histogram(in.numbers, in.bin_count);
     show_histogram_svg(bins);
     return 0;
 }
+
+