The default keyword is also used in the _Generic() expression selector. It still has to be inside the _Generic construct, so there's no way to just randomly scatter default around your code.
However, the syntax <identifier> : is how a label is declared:
Code:
any_valid_identifier: {
... code ...
}
So you might be happy with something like:
Code:
otherwise: {
printf("I got nuffink\n");
}
But you could achieve the same result using a #define if you don't like adding the colon. Just #define otherwise /*empty*/ and use it: