using an iterator.

[ptg]

i want to type in a word and for my program to output it backwards. but i have to use an iterator.
ex: "clue" and it should print it out "eulc"
this is what i have so far.

#include <iostream>
#include<string>
using namespace std;

int main(){
   
	string s;

	cout << "Enter a word: ";
	getline( cin, s );

	string::iterator r;
	r = s.begin();

	while ( r != s.end() ){
			cout<< *r;			
			r++;
	} 
	cout<<endl;

	return (0); 
}