Sliding Window Sum

Code

#include <stdio.h>

void sliding_window_sum(int arr[], int n, int k) {
   int sum =0;
    for(int i = 0; i < n;i++)
    {
        for(int j = i ; j < (k+i) ;j++)
        {
            sum += arr[j];
        }
        printf("%d",sum);printf(" ");
        sum=0;
        if(i > n-k-1)break;
    }
}

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