Sliding Window Sum

Code

#include <stdio.h>

void sliding_window_sum(int arr[], int n, int k) {
    for (int i=0; i<=n-k; i++){
        int sum =0;

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

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