cll.h

/*
 * Simple data structure CLL (Cicular Linear Linked List)
 * */
#include <cctype>
#include <cstdlib>
#include <cstring>
#include <iostream>
 
#ifndef CLL_H
#define CLL_H
/*The data structure is a linear linked list of integers */
struct node {
    int data;
    node* next;
};
 
class cll {
 public:
    cll(); /* Construct without parameter */
    ~cll();
    void display(); /* Show the list */
 
    /******************************************************
     * Useful method for list
     *******************************************************/
    void insert_front(int new_data);  /* Insert a new value at head  */
    void insert_tail(int new_data);   /* Insert a new value at tail */
    int get_size();                   /* Get total element in list */
    bool find_item(int item_to_find); /* Find an item in list */
 
    /******************************************************
     * Overloading method for list
     *******************************************************/
    int operator*(); /* Returns the info contained in head */
    /* Overload the pre-increment operator.
       The iterator is advanced to the next node. */
    void operator++();
 
 protected:
    node* head;
    int total; /* Total element in a list */
};
#endif