I get that in general. It depends if the code is meant to inspect the character x on this machine right now, or really the ASCII character x. As an aside, if s

I get that in general. It depends if the code is meant to inspect the character x on this machine right now, or really the ASCII character x. As an aside, if someone changes the constant value of ‘A’ now, the world will be broken for a while. (But my code would recompile correctly unchanged with the new standard header.)