Sliding Window Sum

Code

#include <stdio.h>

void sliding_window_sum(int arr[], int n, int k) {
    for(int j=0;j<=n-k;j++){
       int sum=0;
    for(int i=0;i<k;i++){
        sum+=arr[i+j];
        
    }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