Dynamic Sensor Buffer

#include <iostream>

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

    if (n < 1) {
        return 0;
    }
    float sum = 0;
    int *arr = new int[n];
    for(int i = 0; i< n; i++){
        int tmp;
        std::cin >> arr[i];
        sum += arr[i];
    }
    std::cout << sum/n;
    delete[] arr;
    // Write your dynamic buffer allocation code here

    return 0;
}

Solving Approach