advance example
#include <iostream>
#include <iterator>
#include <list>
using namespace std;
int main () {
list<int> mylist;
for (int i=0; i<10; i++) mylist.push_back (i*10);
list<int>::iterator it = mylist.begin();
advance (it,5);
cout << "The sixth element in mylist is: " << *it << endl;
return 0;
}