1 #include <stdio.h> 2 3 static struct sss{ 4 float f; 5 char * a[10]; 6 } sss; 7 8 #define _offsetof(st,f) ((char *)&((st *) 16)->f - (char *) 16) 9 10 int main (void) { 11 printf ("++++Array of pointer in struct starting with float:\n"); 12 printf ("size=%d,align=%d\n", 13 sizeof (sss), __alignof__ (sss)); 14 printf ("offset-float=%d,offset-arrayof-pointer=%d,\nalign-float=%d,align-arrayof-pointer=%d\n", 15 _offsetof (struct sss, f), _offsetof (struct sss, a), 16 __alignof__ (sss.f), __alignof__ (sss.a)); 17 printf ("offset-pointer-a[5]=%d,align-pointer-a[5]=%d\n", 18 _offsetof (struct sss, a[5]), 19 __alignof__ (sss.a[5])); 20 return 0; 21 } 22