title: why does %d stand for Integer?
body: <p>I know this doesn't sound productive, but I'm looking for a way to remember all of the formatting codes for <code>printf</code> calls. <code>%s</code>, <code>%p</code>, <code>%f</code> are all obvious, but I can't understand where <code>%d</code> comes from. Is <code>%i</code> already taken by something else?</p>