linkedList 8

#include <iostream>

using namespace std;

 class List{
    public:

        List(){ next = NULL; data = 0;}
        int data;
        List* next;
 };

void output (List* root){
   List node = new List();
   while(root != NULL){
        cout << root->data << " ";
        root = root->next;
   }
   cout << endl;
}

 void push (List*& root, int value){     // insert line to the end ||-||-|new|
    List *node = new List();
    node->data = value;
    node->next = root;
    root = node;
    //output(root);
    //delete node;
}

 int main(){
    List* root = new List();
    push(root, 10);
    cout << root->data;
    push(root, 20);
    cout << root->data << " ";
    output(root);
 }