Given this c++ linked list header file called "llist.h", implement the function, std::string to_string(); should Return a string representation of the list. , please Llist.h: #ifndef LLIST_H#define LLIST_H#include <string>#include <iostream> //a list node is defined here as a struct Node for nowtemplate <typename T>struct Node{ T elem; // elem is the element stored Node<T> *next; // next is the pointer to the next node};//--------------------------------------------------------- template<typename T>class llist {private: Node<T>* front; // pointer to the front node Node<T>* rear; // pointer to the rear node int count; // counter for the number of nodes public: std::string to_string(); }; to_string : std::string Return a string representation of the list.

Given this c++ linked list header file called "llist.h",

implement the function,

, please

Llist.h:

#ifndef LLIST_H
#define LLIST_H
#include <string>
#include <iostream>

//a list node is defined here as a struct Node for now
template <typename T>
struct Node
{
T elem; // elem is the element stored
Node<T> *next; // next is the pointer to the next node
};
//---------------------------------------------------------

template<typename T>
class llist {
private:
Node<T>* front; // pointer to the front node
Node<T>* rear; // pointer to the rear node
int count; // counter for the number of nodes

public:

to_string : std::string

Return a string representation of the list.