Oh... thank you. il'try...

you misunderstood the task. look at the error messages, the sample tests and the description: you are supposed to return a function that can be called. Your current implementation returns a char. this is why the tests complain that called object type 'char' is not a function

you are not supposed to write your own main() function on Codewars. If you do, the tests cannot work correctly, as they provide their own. Also, please use markdown formatting when posting code.