Calculate Array Sum Using Only Pointers

Code

#include <stdio.h>

int calculate_sum(int *ptr, int n) {
  int s = 0;

  for (int i = 0; i < n; ++i) {
    s += *(ptr + i);
  }

  return s;
}

int main() {
  int n;
  scanf("%d", &n);

  int arr[100];
  for (int i = 0; i < n; i++) {
    scanf("%d", &arr[i]);
  }

  int result = calculate_sum(arr, n);
  printf("%d", result);

  return 0;
}

Solving Approach