pointers.c

int main() {

  int arr[2] = { 1, 2 };
  int* x = &arr[0]; // x = address of arr[0]
  printf("%d, %d\n", *x, arr[0]); //=> 1, 1

  arr[0] = 24;
  printf("%d, %d\n", *x, arr[0]); //=> 24, 24

  *x = 42;
  printf("%d, %d\n", *x, arr[0]); //=> 42, 42

  int* y = x + 1; // y = (address of arr[0]) + 1 = address of arr[1]
  printf("%d, %d\n", *y, arr[1]); //=> 2, 2

  return 0;
  
}