diff --git a/main.cpp b/main.cpp
index d7d1e31..c611e35 100644
--- a/main.cpp
+++ b/main.cpp
@@ -30,9 +30,17 @@ input_data(istream& inx){
     inx >> in.bin_count;
     return in;
 }
-int main()
-{   curl_global_init(CURL_GLOBAL_ALL);
+int
+main(int argc, char* argv[]) {
+    if (argc>1){
+    for (size_t i=0;i<argc;i++){
+        cout<<"argv["<<i<<"]= "<<argv[i]<<endl;
+    }
+    return 0;
+    }
+    else{
+    curl_global_init(CURL_GLOBAL_ALL);
     auto in = input_data(cin);
     auto bins = make_histogram(in.numbers,in.bin_count);
     show_histogram_svg(bins);
-}
+}}