#include <iostream>

using namespace std;

int main()
{
    int tab[10];
    int n = 0;
    int suma = 0;
    int dalej = 1;
    int wybor;
    int roznica;

    while (dalej == 1 && n < 10)
    {
        cout << "Podaj liczbe: ";
        cin >> tab[n];

        suma = suma + tab[n];
        n = n + 1;

        if (n < 10)
        {
            cout << "1 - podaj kolejna liczbe, 0 - koniec: ";
            cin >> dalej;
        }
    }

    cout << endl;
    cout << "Pierwszy element tablicy:" << endl;
    cout << tab[0] << endl;

    cout << endl;
    cout << "Zawartosc tablicy:" << endl;

    for (int i = 0; i < n; i++)
    {
        cout << tab[i] << endl;
    }

    roznica = tab[n - 1] - tab[0];

    cout << endl;
    cout << "Roznica ostatniego i pierwszego elementu:" << endl;
    cout << roznica << endl;

    cout << endl;
    cout << "Suma wszystkich elementow:" << endl;
    cout << suma << endl;

    cout << endl;
    cout << "Podaj indeks elementu od 0 do " << n - 1 << ": ";
    cin >> wybor;

    cout << "Wybrany element:" << endl;
    cout << tab[wybor] << endl;

    return 0;
}