Sliding Window Sum

Code

#include <stdio.h>

void sliding_window_sum(int arr[], int n, int k) {
    // Your logic here
    int sum = 0;
    if(n>=k){
        for(int i = 0;i<k;i++){
            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