/**
 * voidstuff.c
 *   Some explorations of void pointers.
 */

#include <stdio.h>

#define PRINT_AND_EVAL(STATEMENT) \
  do { printf ("%s;\n", #STATEMENT); STATEMENT; } while (0)
#define PRINT_POINTER(PTR) \
  printf ("  // %s = %p (%u)\n", #PTR, (void *) PTR, (unsigned int) PTR);

int
main ()
{
  int i;
  char ch;
  void *ptr;

  PRINT_AND_EVAL(ptr = &i);
  PRINT_POINTER(ptr);
  PRINT_AND_EVAL(++ptr);
  PRINT_POINTER(ptr);

  PRINT_AND_EVAL(ptr = &ch);
  PRINT_POINTER(ptr);
  PRINT_AND_EVAL(++ptr);
  PRINT_POINTER(ptr);

} // main