Use of C99 features

[Robert J. Hansen]

> Please keep in mind that C and C++ are two different languages - there
> are subtle difference and thus using a C++ compiler for C code may work
> but is not suggested.

Yes and no.  Bjarne Stroustrup himself has declared that every program
in K&R's _The C Programming Language_ is a valid, well-formed C++
program.  They are definitely different languages, but most sane C90
code will compile without complaint in C++.

Of course, there's a lot of pretty insane C out there.