Sliding Window Sum

Code

#include <stdio.h>

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

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