double D1 (1.234);
    double D2 (12.34);
    double D3 (123.4);

    double *pDouble = & D2;
    cout << "*pDouble       = " << *pDouble      << '\n';        {1}
    cout << "*(pDouble + 1) = " << pDouble       << '\n';        {2}
    cout << "*(--pDouble)   = " << pDouble       << '\n';        {3}