Dynamic Sensor Buffer

#include <iostream>
#include <memory>

using namespace std;

int main() {
    int n;
    std::cin >> n;

    if (n < 1) {
        return 0;
    }
    // unique_ptr<int[]> ptr = make_unique<int[]>(n);
    // int total = 0;
    // int avg = 0;

    // for(int i = 0; i < n; i++){
    //     total += ptr[i];
    // }
    // cout << total << endl;
    // avg = total/n;
    // cout << avg <<endl;


    int* arr = new int[n];
    int buffer = 0;
    for(int i = 0; i < n; i++){
        cin >> arr[i];
        buffer = buffer + arr[i];
    }
    int avg = buffer/n;
    cout << avg << endl;
    delete[] arr;

    //delete[] ptr;

    // Write your dynamic buffer allocation code here

    return 0;
}

Solving Approach