C++教程:C++友元类讲解

   count++;
   idata=i;
   cdata=c;
   prior=p;
   next=n;
}
Node::Node(Node &n)
{
   count++;
   idata=n.idata;
   cdata=n.cdata;
   prior=n.prior;
   next=n.next;
}
Node::~Node()
{
   count--;
   cout <<"Node destructor is running..." <<endl;
}
int Node::allocation()