Sliding Window Sum

Code

#include <stdio.h>

void sliding_window_sum(int arr[], int n, int k) {
    // Your logic here
    int sum=0;
    for(int i=0;i<k;i++)
    {
      sum+=arr[i];
      
    }
   // Print first window sum
    printf("%d", sum);

    // Step 2: Slide the window
    for (int i = k; i < n; i++) {
        sum = sum - arr[i - k] + arr[i];  // Remove leftmost, add rightmost
        printf(" %d", sum);
    }
   
}

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