Sliding Window Sum

Code

#include <stdio.h>

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