That's not true. It's not remotely true. It's so untrue. C code is everywhere. It's in almost every OS I can think of, it's running my dishwasher, it's in my car, it's the standard language of almost every embedded platform I've ever worked on.
Let's take a look at the TIOBE index which, whilst very unscientific, would show up something going extinct as you suggest.
http://www.tiobe.com/index.php/content/paperinfo/tpci/index....
Hey look, there's C at the top, and there are C based languages in three of the top four places.
I suggest that you have fallen victim to a lack of perspective; maybe you don't use C and C++, and the people you work with don't (because if they did, you wouldn't be working with them), and you extrapolated that to the whole world. While you're coding in your frameworks and APIs, there is a vast industry you're not aware of using C and C++ that is not going to go away any time soon.