b&d2.cpp

适合初学者学习以及程序员回顾

// B&D2.cpp

#include "B&D2.h"
main()
{
  cout << "执行 “Derived X;”        之后: "
       << endl;
  Derived X;
  cout << endl;
  cout << "执行 “Derived Y(12,25);” 之后: "
       << endl;
  Derived Y(12,25);
  cout << endl;
}