arrMirrorFragment

    const int arrSize{ 10 };
    int arr[arrSize]{ 1,2,3,4,5,6,7,8,9,10 };
    int tmp{0};

    for (int i{ 0 }; i < arrSize; ++i) { std::cout << arr[i] << ' '; } std::cout << '\n';

    for (int head{ 2 }, tail{ arrSize - 3 }; head<tail;++head,--tail)
    {
        tmp = arr[head];
        arr[head] = arr[tail];
        arr[tail] = tmp;
    }

    for (int i{ 0 }; i < arrSize; ++i) { std::cout << arr[i] << ' '; } std::cout << '\n';