7-3-1.cpp

学习c++的ppt

#include <iostream.h>
#define  STACKSIZE 10
class Stack  {
     private:
           long  buffer[STACKSIZE];
           long  *sp;
     public:
           Stack()  {  sp  = buffer;  }
           ~Stack()  {  };
           void  push(long  data)   {
                if(sp >= buffer+STACKSIZE)
                     cerr << "Stack overflow !" << endl;
                else  {
                     *sp ++ = data;
                     cout << data << " is pushed !" << endl;
                }
           }
           long  pop()   {
                if(sp <= buffer)  {
                     cerr << "Stack is Empty!" << endl;
                     return 0;
                }
                else  return  *--sp;
            }
};
main()
{    Stack   a;
     a.push(351);  a.push(7075461);  a.push(3225);
     cout << endl;
     cout << a.pop() << " is poped !" << endl;
     cout << a.pop() << " is poped !" << endl;
     cout << a.pop() << " is poped !" << endl;
     cout << a.pop() << " is poped !" << endl;
}