C is king because the industry is currently dominated by people who have been doing this since before C++ was a thing.
Additionally, most of these people are primarily electrical engineers, and don't have as strong of a background in computer science. They've been using C for decades and it does everything they want, why would they take the time to learn the boundless complexity introduced by a language that offers them (what they perceive to be) very little?
Additionally, most of these people are primarily electrical engineers, and don't have as strong of a background in computer science. They've been using C for decades and it does everything they want, why would they take the time to learn the boundless complexity introduced by a language that offers them (what they perceive to be) very little?
Talking to long-time C programmers about C++ is actually surprisingly difficult: https://youtu.be/D7Sd8A6_fYU