链式栈( Linkedstack)类的定义 template <class Type> class Stack; template <class Type> class StackNode friend class Stack<Type>, rivate Type data; 结点数据 Stacknode<Type>*ink;∥结点链指针 StackNode( type d=0, StackNode<type> PL=NULL ) data(d), linkdtemplate <class Type> class Stack; template <class Type> class StackNode { friend class Stack<Type>; private: Type data; //结点数据 StackNode<Type> *link; //结点链指针 StackNode ( Type d=0, StackNode<Type> *l=NULL ) : data (d), link (l) { } }; 链式栈 (LinkedStack)类的定义