Where is the error I want to fix my code

I want to change the last number

like the image

#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)

{ node*p=new node;

p->info=item;

node*per=head;

node*curr=head->next;

if(curr!=head){

per=curr;

per=per->next;

curr->next=p;

p->next=per; }

{

if(head->next==head){

p->next=head;

head->next=p;}

}

}

void change (int value)

{ node*curr=head->next;

curr=curr->next;

if(curr!=head){

curr->info=8;}

}

};

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;

}

The list after calling 'change' function with parameter ' 8 ': 468 Program ended with exit code: 0