C is the native language of Unix. It has come to dominate systems programming in the computer industry.
Work on the first official C standard began in 1983. The major functional additions to the language were settled by the end of 1986, at which point it became common for programmers to distinguish between "K&R C" and ANSI C.
For notes specific to the Plan9's C compiler, see Plan9 C. Most of my C projects that have graphics use sdl.
incoming(3): about plan9 c severian