Sliding Window Sum

Code

#include <stdio.h>

void sliding_window_sum(int arr[], int n, int k) {
    int res = 0;
    
    for (int i = 0; i < (n-k+1); i++) {
        
        for (int j = i; j < (i+k); j++) {
            res += arr[j];
        }
        printf("%d ", res);
        res = 0;
    }
}

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