catch out_of_range exception

src/main.cpp

@@ -19,7 +19,8 @@ int main() {
   } catch (const std::domain_error& e){
     std::cout << "encountered div by zero" << e.what() << "\n";
     return -1;
+  } catch(const std::out_of_range& e){
+    std::cout << "encountered " << e.what() << "\n";
+    return -1;
   }
-
-
 }