[feelamee]

Of course people do" virtual functions" in C, but I think this is not an argument despite C. I noticed that making virtual in C++ is sooo easy that people start abusing it. This making reading/understanding/debugging code much harder (especially if they mess this up with templates). And here C is a way - it allow but complicates "virtual". So, you will think twice before using it

[pjmlp]

Most operating systems written in C have it all over the place.

Drivers, and extension points for userspace.

[feelamee]

yes, but not soo much as my production C++. I know that that's our choice, but I underline the difference between C and C++ here