void salesSummary() {
    array <array <int, 5>, 4> arr;
    for (int i = 0; i < 4; i++) {
        cout << "Please enter sales for salesman " << i + 1 << endl;
        for (int j = 0; j < 5; j++) {
            cout << "Product " << j + 1 << endl;
            int salesPerDay;
            int productTotalsales = 0;
            for (int k = 0; k < 2; k++) {
                cout << "Please enter sales for day " << k+1 << endl;
                cin >> salesPerDay;
                productTotalsales += salesPerDay;
            }
            arr[i][j] = productTotalsales;
        }
    }
    cout <<"Salesman"<<'\t'<< "product1 " << '\t' << "product2" << '\t' << "product3"
        << '\t' << "product4" <<'\t' << "product5" << endl;

    for (int i = 0; i < 4; i++) {
        cout << endl;
        cout << "Salesman " << i+1 << '\t';
        for (int j = 0; j < 5; j++) {
            cout << arr[i][j] << '\t' << '\t';
        }
        cout << endl;
    }
}