In article <4040002 at hpnmdla.HP.COM> danm at hpnmdla.HP.COM (Dan Merget) writes: >The confusion has nothing to do with the definition of "expression" ... Especially note that 'c' is NOT a "'...'" operator being applied to a "c" operand! It's a single unanalyzable entity in its own right, known as a "character constant".