A program that asks a new user about the userid and password and then appends it to file “security.txt” provided the given userid does not exist in the file. If it does, then display error message “User id already exists” and then prompts the user to re-enter the userid. Also, make sure that the password is at least 8 characters long with at least a digit a nd a special character out of “ $ , @ , % “ in it.