#pragma once

struct StackRecordT;
using ItemT = char;
const ItemT DEFAULT_ITEM_T{'#'};

class StackT {
   public:
      StackT();
      StackT(const StackT &);
      ~StackT();
      StackT & operator = (const StackT & );


      void Push(ItemT);
      void Pop(void);
      ItemT Top(void) const;
      size_t Size(void) const;


   private:
      size_t size;
      StackRecordT * top;
};