Insert a digit in linked list.cpp

#include <iostream>
using namespace std;


struct Node {
    int data;
    Node* next;
};
void insertAtBeginning(Node*& head, int value) {
    Node* newNode = new Node();
    newNode->data = value;
    newNode->next = head;
    head = newNode;            
}
void insert(Node*& head, int value) {
    Node* newNode = new Node();
    newNode->data = value;
    newNode->next = nullptr;


    if (head == nullptr) {
        head = newNode;
    } else {

        Node* temp = head;
        while (temp->next != nullptr) {
            temp = temp->next;
        }

        temp->next = newNode;
    }
}


void display(Node* head) {
    Node* temp = head;
    while (temp != nullptr) {
        cout << temp->data << " -> ";
        temp = temp->next;
    }
    cout << "NULL" << endl;
}

int main() {
    Node* head = nullptr;
    int values[3];


    cout << "Enter 3 values for the linked list: ";
    for (int i = 0; i < 3; i++) {
        cin >> values[i];
        insert(head, values[i]);
    }
    insertAtBeginning(head, 5);

//insertAtThebegining(head,5);

    display(head);

    return 0;
}