Sliding Window Sum

Code

#include <stdio.h>

void sliding_window_sum(int arr[], int n, int k) {
  for (int i = 0; i < n; i += 1) {

    if (i + k > n) {
      break;
    }

    int s = 0;
    for (int j = i; j < i + k && j < n; j++) {
      s += arr[j];
    }

    printf("%d ", s);
  }
}

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

  sliding_window_sum(arr, n, k);
  return 0;
}

Solving Approach