One of the things that I admire most about W. Richard Stevens's books is that he checked the return value of everything, even printfs. Anal, sure, but that's w

One of the things that I admire most about W. Richard Stevens's books is that he checked the return value of everything, even printfs. Anal, sure, but that's what you're supposed to do in C and when you write demo code that doesn't, even if you surround it with warnings like "DO NOT DO THIS", beginners will still do it. Better to get the habits in right from the start.