[SiVal]

Even the name tells you that C++ was originally designed to be C with extra features. It can still be used that way and frequently is. These days, there are contexts in which the differences are very significant, and there are many others where any statement about either applies to both, and in those latter contexts "C/C++" is completely valid.

[outworlder]

And C++ was originally just a C pre-processor. It's not anymore. So what it was originally is not that relevant nowadays. And that's the whole point. They have diverged too much.

These contexts you speak of are rare enough that the "no-C/C++" heuristic is useful.