>That's [(void) for the destructor] a matter of style, they mean the same thing and are equally valid.
I believe that is incorrect*, and that they are explicitly invalid for destructors and default constructors.
They are optional for other member methods, and typically in C++ are omitted.
>Again, both [<stdio.h> and <cstdio>] are valid.
I believe that is incorrect*. In C the header file is <stdio.h>, whereas in C++ <cstdio> is the header file.
Sincerely, --Eljay
* I may be mistaken. I'd have to review the ISO 14882 spec to be sure.