Dynamic Sensor Buffer

#include <iostream>

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

    if (n < 1) {
        return 0;
    }

    // Write your dynamic buffer allocation code here
    int* arr = new int[n];
    int sum = 0;
    for(int i = 0;i < n; i++) {
         std::cin >> arr[i];
         sum += arr[i];
    }
    std::cout << sum / (float)n;

    delete[] arr;
    return 0;
}

Solving Approach