#include <stdio.h>
#include <stddef.h>

int main(void){

  int    *i,    j = 1;
  char   *c,    h = 'a';
  double *d,    e = 2.0;
  void   *f;

  i = &j;  /* OK. i is an int pointer           */
  c = &h;  /* OK. c is a char pointer           */
  d = &e;  /* OK. d is a double pointer         */
  f = &j;  /* OK. f is a generic pointer        */

  printf("%d, %c, %f, %d\n", *i, 
                             *c,
                             *d, 
                             *(int *)f);
}