Please help with this problem. Thank you!

Given a non-empty string like "Alabama", write a function, stringfun, that returns a string like "AAIAlaAlabAlabaAlabamAlabama". Use main() to call string fun() and pass the string, str, as a parameter to this function call. A few examples: stringfun(Code') CoCodCode' stringfun('fall') 'ffafalfall. stringfun('ab') .aab