Anka #2

#include <iostream>
using namespace std;
class Node {
public:
    int data;
    Node *next;
    Node(int val, Node *next)
    {
        this->data = val;
        this->next = next;
    }
};

class Stack {
private:
    Node * head;
public:
    Stack()
    {
        this->head = NULL;
    }
    void push(int data)
    {
        Node *new_Node = new Node(data,this->head);
        this->head = new_Node;

    }
    int pop()
    {
        if (this->head != NULL)
        {
            int tmp = this->head->data;
            this->head = this->head->next;
            return tmp;
        }
        return NULL;


    }
};



int main()
{
    Stack *st = new Stack();
    for (int i = 0; i < 10; i++)
        st->push(i);
    int d = st->pop();
    while (d)
    {

        cout << d << endl;
        d = st->pop();
    }


    getchar();
    return 0;
}