Sliding Window Sum

Code

#include <stdio.h>

void sliding_window_sum(int arr[], int n, int k) {
    // Your logic here
    int i,j,sum=0,arr2[10];
    for (i=0;i<=(n-k);i++){
        int b=i;
        sum=0;
        for (j=0;j<k;j++){
           sum+=arr[b];
           arr2[i]=sum;
           b++;
        }
        printf("%d",arr2[i]);
        printf(" ");
    }
      
}

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