diff --git a/main.cpp b/main.cpp
index 11840e5..d2149a0 100644
--- a/main.cpp
+++ b/main.cpp
@@ -27,9 +27,15 @@ input_data(istream& in,bool promt = false) {
     in >> im.bin_count;
     return im;
 }
-int
-main() {
+int main(int argc, char* argv[]) {
     curl_global_init(CURL_GLOBAL_ALL);
+    if(argc > 1) {
+        cout << "argc = " << argc << endl;
+        for(int i = 0; i < argc; i++){
+            cout << "argv[" << i << "] = " << argv[i] << endl;
+        }
+        return 0;
+    }
     auto in = input_data(cin,true);
     auto bins = make_histogram(in.numbers, in.bin_count);
     show_histogram_svg(bins);