#include <stdio.h>
#include <stdlib.h>

int main()
{
   struct Imag
   {
      double Re;
      double Im;
   };
   struct Imag *I = calloc(2, sizeof(*I));

   if (I != NULL)
   {
      I->Re = 1;
      I->Im = 0;
      (I + 1)->Re = 0;
      (I + 1)->Im = 1;
      printf("  *I   = %f / %f\n", I->Re, I->Im);
      printf("*(I+1) = %f / %f\n", (I + 1)->Re, (I + 1)->Im);

      free(t);   /* Speicher wieder freigeben */
   }
   else
      printf("Kein Speicher verfuegbar!\n");

   return 0;
}