How to build stack in C++

#include <iostream>
using namespace std;

#define MAX 10

class Stack
{
private:
       int arr[MAX];
       int top;

public:
      Stack()
      {
            top = -1;
      }

       void Push(int item)
      {
             if(top == MAX-1)
            {
                  cout<<endl<< "Stack is full";
                   return;
            }

            top++;
            arr[top] = item;
      }

       int Pop()
      {
             if(top == -1)
            {
                  cout<<endl<< "Stack is empty";
                   return NULL;
            }

            int data = arr[top];
            top--;

             return data;
      }

};

int main()
{
      Stack s;

      s.Push(1);
      s.Push(2);
      s.Push(3);

       int i = s.Pop();
      cout<<endl<< "item= popped = "<<i<<endl;

      i = s.Pop();
      cout<<endl<< "Item popped = "<<i<<endl;

       return 0;
}