#include <stdio.h>

int main() {
  int i = 10, j = 0, *k;
  k = &i;
  *k = 20;
  k = &j;
  *k = i;
  printf("i = %d,\nj = %d,\n*k = %d\n",
	 i, j, *k);
  return 0;
}