diff --git a/src/C++/Driver/src/test.cpp b/src/C++/Driver/src/test.cpp
index 087eac4..2f3faf0 100644
--- a/src/C++/Driver/src/test.cpp
+++ b/src/C++/Driver/src/test.cpp
@@ -38,6 +38,7 @@ int main() {
 // }
 
 int command() {
+  char input;
   std::cout << "choose between forward and rotate" << endl;
   std::cout << "What must the robot do?";
   cin >> input;