Yeah, ANSI C. I took a class on it two years ago at the university I am attending. Then I sold the book back to the school which was bad, but then I remembered the book being difficult to understand as well so, meh. I didn't think I would use C programming but I am using it a lot more now and actually enjoy some extent of it but again, I feel like I know less than half of the C language and wouldn't hurt to brush up and use as a reference guide.
Got any recommendations for books?