It all makes sense now. Astounding its legal to use C/++ in a safety critical situation.
Airplane systems, telecom equipment, medical equipment, satellite and space launch equipment, railway systems, etc., etc.
There's other languages used as well obviously, and even just assembly in some parts of some systems, but in terms of the majority it's C and/or C++.
[1] https://ossna2020.sched.com/event/c3QN/there-is-no-store-for...
Airplane systems, telecom equipment, medical equipment, satellite and space launch equipment, railway systems, etc., etc.
There's other languages used as well obviously, and even just assembly in some parts of some systems, but in terms of the majority it's C and/or C++.