#define _CRT_SECURE_NO_WARNINGS

#include <iostream>

using namespace std;

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

class SinglyLinkedList
{
private:
	Node* head;
	Node* tail;
	int count;

public:
	SinglyLinkedList()
	{
		head = tail = nullptr;
	}

	~SinglyLinkedList()
	{
		DellAll();
	}

	void Add(int data)
	{
		Node* tmp = new Node;

		tmp->data = data;
		tmp->next = nullptr;

		if (head!= NULL)
		{
			tail->next = tmp;
			tail = tmp;
		}
		else
		{
			head = tail = tmp;
		}
		count++;

	}
	void Del()
	{
		Node* tmp = head;

		head = head->next;

		delete tmp;
	}
	void DellAll()
	{
		while (head != nullptr)
		{
			Del();
		}
	}

	int getCount()
	{
		return count;
	}

	void Print()
	{
		Node *tmp = head;
			while (tmp != NULL)
			{
				cout << tmp->data << endl;
				tmp = tmp->next;
			}
	}


};
int main()
{
	SinglyLinkedList();
	SinglyLinkedList hello;
	hello.Add(5);
	hello.Add(3);
	hello.Add(90);
	hello.Print();
	hello.Del();
	hello.Print();


	cin.get();
	cin.get();
	return 0;
}