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