It is very uncommon that there is nothing else to fix in a post without proper formatting. Salutations/Signatures normally appear in such posts, as do "Help me please" or some variation on "Thanks in Advance".
Some new users will post only code with out the coding format
If there is nothing in the post except code, then leave a comment for the OP and explain what to edit and what they need to add. Without any explanation, then it will likely be downvoted, closed, and deleted - so a comment would be better for the OP in the long run.