Sliding Window Sum

Code

#include <stdio.h>

void sliding_window_sum(int arr[], int n, int k) {
    int j,r,i;
    for(i=0;i<n-k+1;i++)
    {
        r=0;
        j=0;
        while(j<k)
        {
            r=r+arr[i+j];
            j++; 
        }
        printf("%d ",r);
    }
    // Your logic here
}

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