Sliding Window Sum

Code

#include <stdio.h>

void sliding_window_sum(int arr[], int n, int k) {
    // Your logic here
    int res[n];
    int sum =0;
    int ptr = 0;
    for(int i=0;i<k;i++)
        sum += arr[i];
    printf("%d ",sum);
    for(int i= k;i<n;i++)
    {
        sum += arr[i] - arr[i-k];
        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