diff --git a/main.cpp b/main.cpp
new file mode 100644
index 0000000..af6710b
--- /dev/null
+++ b/main.cpp
@@ -0,0 +1,8 @@
+#include <iostream>
+#include "arithmetic.h"
+int main()
+{
+std::cout << "Hello world!" << std::endl;
+std::cout << "c= " << add(1,2) << std::endl;
+return 0;
+}