Sliding Window Sum

Code

#include <stdio.h>

void sliding_window_sum(int arr[], int n, int k) {
    // Your logic here
    int sum = 0, j = 1, start = 0; 
    int end = k-1;
    int result[100];
    for(int i =0; i <= k-1; i++){
        sum += arr[i]; 
    }
    result[0] = sum;

    while(end<n-1){
        sum = sum - arr[start];
        start ++;
        end ++;
        sum = sum + arr[end];
        result[j]= sum;
        j++;
    }
    for(int i =0; i< j; i++){
        printf("%d ", result[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