Sliding Window Sum

Code

#include <stdio.h>

void sliding_window_sum(int arr[], int n, int k) {
    int end = k-1;
    int start = 0;
    int sum_arr[50];
    int c = 0;

    while(end != n){
        int sum = 0;
        for(int i = start; i<= end ; i++){
            sum += arr[i];
        }
        sum_arr[c] = sum;
        printf("%d", sum_arr[c]);
        printf(" ");
        start++;
        end++;
        c++;
    }

}

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