Sliding Window Sum

Code

#include <stdio.h>

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

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