Nitpick: it is only guaranteed to be unequal to any character and less than zero. (And no, I don’t know any implementation that has it unequal to minus one. I

Nitpick: it is only guaranteed to be unequal to any character and less than zero. (And no, I don’t know any implementation that has it unequal to minus one. I would love to see a devilish C compiler/standard library that would make all kind of standard-conforming, yet non-standard implementation choices (EOF not minus one, RAND_MAX a fairly small prime, etc. Goal would be to have no single major program run correctly on it)