How to write cpp program to reverse a linked list

//C++ program for reversing single Linked list nodes 
Cpp program for implement reversing Single Linked List
Single linked list program for reversing the nodes
How to reverse linked list 

#include<iostream>

using namespace std;

struct node

{

node *next;

int data;

};

class ll

{

private:

node *start;

public:

ll(){start=NULL;}

void insert(int a)

{

cout<<"Inside Insert."<<endl;

node *newnode=new node;

newnode->data=a;

newnode->next=start;

start=newnode;

//return;

}

void display();

void del();

void reverse();

};

How to use Linked list in C++

//Program in cpp to demonstrate linkedlist, linkedlist.cpp
#include<iostream>
using namespace std;
struct node
        {
        public:
        int data;
        node * next;
        };
class linkedlist
        {
        private:
        node* first;
        public:
        linkedlist()
                {
                first=NULL;
                }
        void getdata(int d);
        void display();
        };
void linkedlist::getdata(int dd)
        {
        node* newnode=new node;
        newnode->data=dd;
        newnode->next=first;
        first=newnode;
        }
void linkedlist::display()
        {
        node* current=first;
        while(current!=NULL)
                {
                cout<<current->data<<endl;
                current=current->next;
                }
        }
int main()
{
linkedlist li;
li.getdata(10);
li.getdata(15);
li.getdata(20);
li.getdata(18);
li.getdata(19);
li.display();
return 0;
}
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