Iterating and modifying an array using pointers in C

ptr_iter.c

#include <stdio.h>
#include <stdlib.h>

#define SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))

void arr_iter(const short[], short);
void in_place_mod(short[], short, unsigned int);

int main(void) {
  short numsArr[] = {1, 2, 3, 4};
  short SIZE_NUMS = SIZE(numsArr);

  arr_iter(numsArr, SIZE_NUMS);
  in_place_mod(numsArr, SIZE_NUMS, 3);

  return EXIT_SUCCESS;
}

void arr_iter(const short arr[], short arrSize) {
  puts("-> Array iteration:");
  for (short index = 0; index < arrSize; index++) {
    // Iterating an array using pointers. No modification of elements.
    const short *p_element = arr + index;
    printf("\tpointer + %d: %10p | value = %d\n", index, p_element, *p_element);
  }
}

void in_place_mod(short arr[], short arrSize, unsigned int increment) {
  puts("-> Array modification:");
  for (short index = 0; index < arrSize; index++) {
    // In-place modification of the elements of an array using pointers
    short *p_element = arr + index;
    *p_element += increment;
    printf("\tpointer + %d: %10p | value + %d = %d\n", index, p_element,
           increment, *p_element);
  }

  for (short index = 0; index < arrSize; index++) {
    /* In-place modification of the elements of an array using index
    notation, which is just a shorthand for pointer dereferencing! */
    arr[index] += increment; // arr[index] == *(arr + index)
    printf("\tpointer + %hi: %10p | value + %d = %hu\n", index, &arr[index],
           increment, arr[index]);
  }
}


/* SAMPLE OUTPUT:

-> Array iteration:
        pointer + 0: 0x7ffd59722ba0 | value = 1
        pointer + 1: 0x7ffd59722ba2 | value = 2
        pointer + 2: 0x7ffd59722ba4 | value = 3
        pointer + 3: 0x7ffd59722ba6 | value = 4
-> Array modification:
        pointer + 0: 0x7ffd59722ba0 | value + 3 = 4
        pointer + 1: 0x7ffd59722ba2 | value + 3 = 5
        pointer + 2: 0x7ffd59722ba4 | value + 3 = 6
        pointer + 3: 0x7ffd59722ba6 | value + 3 = 7
        pointer + 0: 0x7ffd59722ba0 | value + 3 = 7
        pointer + 1: 0x7ffd59722ba2 | value + 3 = 8
        pointer + 2: 0x7ffd59722ba4 | value + 3 = 9
        pointer + 3: 0x7ffd59722ba6 | value + 3 = 10
*/