// Class Example and Exercise.
#include <iostream>
#include <cstdlib>// to define NULL

using namespace std;

class L{ // A dumb singly linked list class.
//        In general do not make everything public like this
public:
	L(char c){chr=c; nxt=NULL;}

	char chr; // the data in the node
	L* nxt;   // pointer to the next node (if any)
};// class L

main()
{
	L* h; // h is for the head of the list.
     //Construct a list, step by step.
	h = new L('a'); // h points at a newly constructed node
	h->nxt = new L('b'); // the nxt field of h points at a second node
	h->nxt->nxt = new L('c'); // plug in the third node.

     //Show what we have done.
	cout << h->chr
	     <<	h->nxt->chr
	     <<	h->nxt->nxt->chr;

   return 0;
}