I learned C as first language. I haven't used it for any real-world work, but it was fun way to get into programming. K&R told me not just C but how to program,

I learned C as first language. I haven't used it for any real-world work, but it was fun way to get into programming. K&R told me not just C but how to program, then I read TUPE which told me how to effectively use the best development environment, Unix.