====== Pointers and arrays ======

<code C>
/* name of an array (without index) is the address of first element */
#include <stdio.h>

int main()
{
  int a[3] = {7, 15, 19};

  printf("\n");
  printf("  a[0] = %d\n", a[0]);
  printf(" &a[0] = %p\n", &a[0]);
  printf("     a = %p\n", a);
  printf("    *a = %d\n", *a);

  printf("\n");
  printf("  a[1] = %d\n", a[1]);
  printf(" &a[1] = %p\n", &a[1]);
  printf(" (a+1) = %p\n", a+1);
  printf("*(a+1) = %d\n", *(a+1));

  printf("\n");
  printf("  a[2] = %d\n", a[2]);
  printf(" &a[2] = %p\n", &a[2]);
  printf(" (a+2) = %p\n", a+2);
  printf("*(a+2) = %d\n", *(a+2));

  return 0;
}
</code>

<code C>
/* accessing array members using pointer */
/* arithmetics on array name is invalid */
#include <stdio.h>

int main()
{
  int a[] = {23, 46, 28, 48};
  int *p = a;
  int i;

  for(i=0; i<4; i++) {
    printf("a[i] = %d\n", *p);
    p++;
    // a++ is invalid
  }
  return 0;
}
</code>