Sliding Window Sum

Code

#include <stdio.h>

void sliding_window_sum(int arr[], int n, int k) {
    int s_arr[n - k + 1] = {0};
    for (int i = 0; i < n - k + 1; i++) {
        for (int j = 0; j < k; j++) {
            s_arr[i] += arr[i + j];
        }
        printf("%d ", s_arr[i]);
    }
}

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