Is there a difference between: int *num; int * num; int* num; ? If so, could anyone explain?

No difference at all. It might be best to use the int *num style though because it reminds you that the ''*'' goes with the ''num'' and not the ''int''.
For instance,
int* num, foo, joe;
might be a little deceptive because the only pointer is "num." The other two are regular integers.