#ifndef STACK_H
#define STACK_H

class Stack
{
public:

    Stack() = default;
    Stack(Stack const& other);
    Stack& operator=(Stack const& other);
    Stack(Stack && other);
    Stack& operator=(Stack && other);
    ~Stack();

    void push(int v);
    int top() const;
    void pop();
    bool is_empty() const;

private:

    struct Node
    {
        int value;
        Node* next;
    };

    Node* first;

    Node* clone(Node* n);
};

#endif