Sliding Window Sum

Code

#include <stdio.h>

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