Sliding Window Sum

Code

#include <stdio.h>

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

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