The following code example is taken from the book
The C++ Standard Library - A Tutorial and Reference, 2nd Edition
by Nicolai M. Josuttis, Addison Wesley Longman, 2012
Copyright © 2012 by Pearson Education, Inc. and Nicolai M. Josuttis
#include <iterator>
#include <iostream>
#include <list>
#include <algorithm>
using namespace std;
int main()
{
// create list with elements from 1 to 9
list<int> coll = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
// find position of element with value 5
list<int>::const_iterator pos;
pos = find (coll.cbegin(), coll.cend(), // range
5); // value
// print value of the element
cout << "pos: " << *pos << endl;
// convert iterator to reverse iterator
list<int>::const_reverse_iterator rpos(pos);
// print value of the element to which the reverse iterator refers
cout << "rpos: " << *rpos << endl;
// convert reverse iterator back to normal iterator
list<int>::const_iterator rrpos;
rrpos = rpos.base();
// print value of the element to which the normal iterator refers
cout << "rrpos: " << *rrpos << endl;
}