text: #pragma once
  #include <string>
  
  struct node
  {
  	int data;
  	struct node* next{ nullptr };
  };
  class SinglyLinkedList
  {
  private:
  	node* head{nullptr};
  	node* tail{nullptr};
  	
  public:
  	void append(int);
  	void display();
  	int access(int);
  	void insert_after(int, int);
  
  };
  
  