Program for Swapping the Two Integers

                For example, Swapping the two value

                                int x=4,y=6,t;

                                t=x;

                                x=y;

                                y=t;

                Similarly,

void Rolodex::insertAfterCurrent(const std::string& str)

{

       RolodexItem* t = current->next;     

       t->prev = current->next = new RolodexItem ();                               

       current->next->prev = current;                                                            

       current->next->next = t;                                                                

      current->next->value = str;                                                             

      current = current->next;                                                         

}

t = current->next 

set the next position of the pointer

 t->prev= new RolodexItem ();

Initiate the previous position into RolodexItem Object

current->next->next = t;

Set the next of current Next RolodexItem Object into t

Here, t (temporary) is used to change the position of the RolodexItem Object