#include "public.h"  
typedef int   SElemType;

typedef struct s_node
			{
			SElemType data;
			struct s_node *Next;
			}SNode,*SNodePtr;
 class LinkStack{
		 SNodePtr top;
		 int Length;
		public:
		 LinkStack(){
				top=NULL;
				int Length=0;
			    }
		~LinkStack();
		Status InitStack();
		Status DestroyStack();
		Status ClearStack();
		Status StackEmpty();
		int    StackLength();
		Status GetTop(SElemType &e);
		Status Push(SElemType e);
		Status Pop (SElemType &e);
		Status StackTraverse();
		};