linux下的gcc编译器

				#include 								static struct sss{				  char f;				  char * snd;				} sss;								#define _offsetof(st,f) ((char *)&((st *) 16)->f - (char *) 16)								int main (void) {				  printf ("+++Struct char-pointer:\n");				  printf ("size=%d,align=%d,offset-char=%d,offset-pointer=%d,\nalign-char=%d,align-pointer=%d\n",				          sizeof (sss), __alignof__ (sss),				          _offsetof (struct sss, f), _offsetof (struct sss, snd),				          __alignof__ (sss.f), __alignof__ (sss.snd));				  return 0;				}