#include <stdarg.h>struct tiny{  char c;  char d;};f (int n, ...){  struct tiny x;  int i;  va_list ap;  va_start (ap,n);  for (i = 0; i < n; i++)    {      x = va_arg (ap,struct tiny);      if (x.c != i + 10)	abort();      if (x.d != i + 20)	abort();    }  {    long x = va_arg (ap, long);    if (x != 123)      abort();  }  va_end (ap);}main (){  struct tiny x[3];  x[0].c = 10;  x[1].c = 11;  x[2].c = 12;  x[0].d = 20;  x[1].d = 21;  x[2].d = 22;  f (3, x[0], x[1], x[2], (long) 123);  exit(0);}