#include <iostream>

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

int main () {
   node * foo;
   node * bar;

   foo = new node;

   foo -> data = 'a';

   foo-> next = NULL;

   cout << foo->data << endl;


   bar = new node;
   bar->data = foo -> data;
   bar->next = foo->next;

   bar -> data = 'Z';
   cout << foo->data << endl;

   foo->next = bar;

}