Средства и методы разработки

Semantics

2Thesizeof operator yields the size (in bytes) of its operand, which may be an expression or the parenthesized name of a type.The size is determined from the type of the operand.The result is an integer. If the type of the operand is a variable length array type, the operand is evaluated; otherwise, the operand is not evaluated and the result is an integer constant.

K&R: «Strictly, sizeof produces an unsigned integer value whose type, size_t, is defined in the header <stddef.h>.»

<limits.h> содержит CHAR_BIT.