Deletion from beginning in singly linked list in C++

#include <iostream>
using namespace std;

class Node
{
    public:
    int data;
    Node *next;
};

void insertStart(Node** head, int data){

    Node* new_node = new Node();

    // assign data value
    new_node->data = data;
    // change the next node of this new_node 
    // to current head of Linked List
    new_node->next = *head;

    //changing the new head to this newly entered node
    *head = new_node;

}
void display(Node* node){

    //as linked list will end when Node is Null
    while(node!=NULL){
        cout << node->data << " "; node = node->next;
    }
    cout << endl;
}

int main(){

    Node* head = NULL;

    insertStart(&head,10);
    insertStart(&head,11);
    insertStart(&head,12);
    insertStart(&head,13);
    insertStart(&head,14);
    insertStart(&head,15);
    insertStart(&head,16);
    insertStart(&head,17);
    insertStart(&head,18);

    display(head); 
    return 0;  
}

#include <iostream>
using namespace std;

class Node
{
    public:
    int data;
    Node *next;
};

class LinkedList
{
    private:
        Node* head;
    public:
        LinkedList() { // constructor
        head = NULL;
    }
        void insertBeginning(int data);
        void display();
};

void LinkedList::insertBeginning(int data){

    Node* new_node = new Node();
    
    // assign data value
    new_node->data = data;
    // change the next node of this new_node 
    // to current head of Linked List
    new_node->next = head;

    //changing the new head to this freshly entered node
    head = new_node;

}
void LinkedList::display(){
    
    Node* node = new Node();
    node = head;
    
    //as linked list will end when Node is Null
    while(node!=NULL){
        cout << node->data << " "; node = node->next;
    }
    cout << endl; 
} 

int main()
{ 
    LinkedList* singly_list = new LinkedList(); 
    singly_list->insertBeginning(10);
    singly_list->insertBeginning(11);
    singly_list->insertBeginning(12);
    singly_list->insertBeginning(13);
    singly_list->insertBeginning(14);
    singly_list->insertBeginning(15);
    singly_list->insertBeginning(16);
    singly_list->insertBeginning(17);
    singly_list->insertBeginning(18);

    singly_list->display(); 
    
    return 0;  
}