diff --git a/main.cpp b/main.cpp
index 9de5622..114b56c 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,6 +1,7 @@
 #include <iostream>
 #include <vector>
 #include <math.h>
+#include <curl/curl.h>
 #include "histogram.h"
 #include "text.h"
 #include "svg.h"
@@ -34,8 +35,19 @@ input_data(istream& tin, bool promt)
     return in;
 }
 
-int main()
+int main(int argc, char* argv[])
 {
+
+    if (argc > 1)
+    {
+        cout << argc;
+        for (size_t i = 0; i < argc; i++)
+        {
+            cout << "argv[" << i << "]=" << argv[i];
+        }
+        return 0;
+    }
+    curl_global_init(CURL_GLOBAL_ALL);
     auto in = input_data(cin, false);
     auto B = make_histogram(in.A, in.bin);
     show_histogram_svg (B);