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