#include <stdio.h>

int main(void) {

  int i;
  double a[5] = {5.0, 7.0, 9.0, 3.0, 1.0}, *pa = &a[0];

  /* Print the elements in a */
  for(i = 0; i < 5 ; i++) printf("%f ", a[i]);  printf("\n");

  /* Modify elements in a via the pointer pa */
  *pa = 13.0;
  pa++;
  *pa = 19.5;

  /* Print the elements in a again */
  for(i = 0; i < 5 ; i++) printf("%f ", a[i]);  printf("\n");
  
  return 0;
}