Question

C++

Give the class definition of class node here for a llist with and without a friend class so that llist can access the node data members without changing your llist. Be sure to say  private: or public:.first.

   *Without:   class node {

    *With:        class node {                                                                    

Answer 1

SOLUTION-

I have given both class below ;)

With friend class:

class node{
   friend class llist;
   int data;
   node* next;
   node(){
       //default constructor
       data = 0;
       next = NULL;
   }
   node(int data){
       this.data = data;
   }
};

class llist{
   private:
       int size;
   public:
node* head;
       //Constructor
       llist(){
           size = 0;
           head = new node();
       }
       int getSize();
       void insert(int val);
       void printListElements();
};

Without friend class:

class node{
   private:
       int data;
       node* next;
   public:
       node(int d){
           next = NULL;
           data = d;
       }
       node* insert(int val);
       void printListElements();
};

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