各种专用iterator的用法

#include <iostream>

#include <cstdlib>

#include <algorithm>

#include <iterator>

#include <vector>

#include <set>

using namespace std;

int main()

{

istream_iterator<int> in(cin), end;

set<int> abc(in,end);

vector<int> ver;

copy( abc.begin(), abc.end(),

back_inserter(ver) );

copy(abc.begin(), abc.end(),

ostream_iterator<int>(cout, " "));

cout << endl;

copy(ver.rbegin(), ver.rend(),

ostream_iterator<int>(cout, " "));

cout << endl;

system("pause");

return 0;

}