How write this function in c++?cirucular header linked list

#include

using namespace std;

struct node

{ int info;

node *next;

};

class clist

{

private:

node *head;

public:

clist(){head=new node; head->next=head;}

void traverse()

{

if(head->next==head)

cout

else

{

node*curr=head->next;

while(curr!=head)

{

coutinfo

curr=curr->next;

}

cout

}

}

void add(int item)

{

}

void change (int value)

{

}

};

int main()

{

clist s;

s.add(4);

cout

s.traverse();

s.add(3);

cout

s.traverse();

s.add(6);

cout

s.traverse();

s.change(8);

cout

s.traverse();

return 0;

}

1- void add (int item); This function inserts a new node after the first node (when the list is empty, the inserted node will be the first node)