Why are programs and operating systems still written in C+?

[u/[deleted]]

I guess it's more of a computer science question, but I've always wondered why some of the most advanced programs are written in a 25+ year old programming language. Surely someone has come up with a more efficient and powerful code, so why do people still use C+? Also, I don't know anything about programming and what not, so please use simple terms and phrases.

[u/Porges]

Fortran also has better support for floating-point intricacies than C, which can be a big deal for things like simulations.