Sliding Window Sum

Code

#include <stdio.h>
#include <cstdlib>

void sliding_window_sum(int arr[], int n, int k) {
    // Your logic here
    int* sum = (int*)malloc((n-(k-1))*sizeof(int));
    for(int i=0; i<=(n-k); i++)
    {
        for(int j=i; j<(k+i); j++)
        {
            sum[i] += arr[j]; 
        }
    }

    for(int i=0; i<=(n-k); i++)
    {
        printf("%d ",sum[i]);
    }
}

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