ISO/IEC 9899:1999 (E) -- Programming Languale C -- 6.3.2.3 Pointers 3 An integer constant expression with the value 0, or such an expression cast to type void *, is called a null pointer constant .55) 55) The macro NULL is defined in <stddef.h> (and other headers) as a null pointer constant; see 7.17. 7.17 Common definitions <stddef.h> 3 The macros are NULL which expands to an implementation-defined null pointer constant もうこのやりとり飽きたんだが、いい加減覚えてくれないか 前から何度も言っているが、規格見てから言ってくれと