insert at head

#include<bits/stdc++.h>
using namespace std;

struct Node{
    int val;
    Node * next;
};

Node * insertAtHead(int data,Node* head){
    Node * a = new Node();
    a->val = data;
    a->next = NULL;

    if(head==NULL){
        head= a;
    }
    else{
        a->next = head;
        head= a;
    }



    return head;
}

void printList(Node * head){

    while(head!=NULL){
        cout<<head->val<<" ";
        head= head->next;
    }

    return;
}

int main(){

    int n;
    cout<<"How many values you want in list : "<<endl;
    cin>>n;

    Node *head = NULL;

    //insertAtHead
    //5
    //6->5
    //9->6->5

    for(int i = 0; i<n ; i++){
        int data;
        cout<<"Enter an integer : "<<endl;
        cin>>data;

        head = insertAtHead(data,head);
    }

    printList(head);

}