Linked_List.cpp

#include <iostream>

using namespace std;

class node{
    public:
        int data;
        node* next;
    
    node(int val){
        data = val;
        next = NULL;
    }    
};
void insertAtTail(node* &head, int val){
    node* n= new node(val);
    if(head == NULL){
        head=n; 
        return;
    }
    node* temp = head;
    while(temp -> next !=NULL){
        temp = temp -> next;
    }
    temp -> next=n;
}
void display(node* head){
    node* temp = head;
    while(temp!= NULL){
        cout<<temp-> data<<"->";
        temp = temp -> next;
    }
    cout<<"NULL"<<endl;
    
}

int main()
{
    node* head=NULL;
    insertAtTail(head, 1);
    insertAtTail(head, 2);
    insertAtTail(head, 3);
    display(head);

    return 0;
}