lista

#include <iostream>
using namespace std;

struct node
{
    int data;
    node* next;
};


int main()
{


    node* n;
    node* tmp;
    node* head;
    bool b = false;

    for(int i=0; i<4; i++)
    {
        n = new node;
        n->data = i+1;
        if(b == false)
        {
            head = n;
            b = true;
        }
        tmp = n;
        tmp -> next = n;
        tmp = tmp -> next;
    }
    n -> next = NULL;



}