Sliding Window Sum

Code

#include <stdio.h>

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

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