Marcinowe zagadki

#include <iostream>

using namespace std;

int main() {
    int counter{}, array_of_numbers[1000], temp{};
    int even_numbers_counter{}, even_numbers_sum{}, max_even{ -9999 }, all_numbers_sum{};
    double mean_of_numbers{};
    bool stop{true};


    cout << "Enter your numbers, if you wanna stop. Insert '2137'" << endl;
    do {
        cout << "Insert [" << counter + 1 << "] number: ";
        cin >> temp;
        if (temp == 2137) stop=!stop;
        if (stop != false) {
            array_of_numbers[counter] = temp;
            counter++;
            if (temp % 2 == 0) {
                even_numbers_counter++;
                even_numbers_sum += temp;
                if (max_even < temp) max_even = temp;
            }
            all_numbers_sum += temp;
            mean_of_numbers = static_cast <double> (all_numbers_sum) / counter;
        }

    } while (stop);

    cout << endl << endl;
    cout << "The amount of even numbers is " << even_numbers_counter << endl;
    cout << "Aggregate of even numbers is " << even_numbers_sum << endl;
    if (max_even == -9999) cout << "The biggest even number does not exist!" << endl;
    else cout << "The biggest even number is " << max_even << endl;
    cout << "Mean of the numbers is " << mean_of_numbers << endl;






    system("pause");
    return 0;
}