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 < (n-k+1); i++)
    {
        sum = arr[i];
        for(int j = i+1; j < (k + i); j++)
        {
            sum += arr[j];
        }
        arr[i] = sum;
    }

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

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