(From the C99 standard:) § 6.5.3.4 The sizeof operator […] Semantics 2 The sizeof operator yields the size (in bytes) of its operand, […] 3 When applied t

(From the C99 standard:) § 6.5.3.4 The sizeof operator […] Semantics 2 The sizeof operator yields the size (in bytes) of its operand, […] 3 When applied to an operand that has type char, unsigned char, or signed char, (or a qualified version thereof) the result is 1.