Sliding Window Sum

Code

#include <stdio.h>

int summ(int arr[], int i, int k)
{
    int sum=0;
    for(int j=i;j<i+k;j++)
    {
        sum += arr[j];
    }
    return sum;
}
void sliding_window_sum(int arr[], int n, int k) {
    for(int i=0;i<=n-k;i++)
    {
        printf("%d ", summ(arr,i,k));
    }
}

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