>>> if (!*dst) >> >> As I've noted elsewhere (can't remember if it's where you might have >> seen it), I dislike punning pointers to Booleans. But this is a matter >> of style, and as far as I know nothing can go wrong with it. > > I wasn't punning the pointer to bool (which I also do a lot), but the > character. An equivalent exanded version would be `if (*dst == '\0')`.
Even if it were a pointer, it would not be a pun. The C standard defines if(e), where e is an expression, to switch on the value of (e)!=0. If e is a pointer, 0 is converted to the null pointer. (As a matter of programming style, I prefer to use 0 to specify a null pointer; it doesn't require one to haul in stddef.h as NULL does. And it doesn't shout.) Doug
