#include <stdio.h>

main()
{

  double x, y[2] = {1.0,2.0}, *ptr1;
  int i, j, *ptr2;

  i = j = 9;
  ptr2 = &i;
  *ptr2 = 3;

  x = 2.7;
  ptr1 = &y[0];      /* note you can also write: ptr1 = y; */
  *ptr1 = x;
  ptr1 += 1;         /* you can also use: ptr1 = ptr1 +1;
			or: ptr1++;         */ 
  *ptr1 = x;

  /* you can always add in some print statements at the end to make sure you 
     know what values the variables have when the program executes.
     Eg
        printf("%lf %lf %lf\n", x, y[0], y[1]);
     and
        printf("%d\n", i);
  */

}