#include <vector>

using namespace std;



void main()

{

	vector<int> v(10);

	const vector<int> cv(10);



	vector<int>::iterator v_iter1 = v.begin(); // OK

	vector<int>::const_iterator v_iter2 = v.end(); // OK - conversion from mutable to constant is legal

	

	vector<int>::iterator v_iter3 = cv.begin(); // Error - attempt to assign iterator to constant to mutable iterator

	vector<int>::const_iterator v_iter4 = cv.end(); // OK



	*v_iter1 = 5;	// OK

	*(v_iter4-1) = 6; // Error - cannot assign to constant

}