Sliding Window Sum

#include <stdio.h>

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

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;
}