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#include <iostream>
#include <iterator>
#include <algorithm>
 
using namespace std;
 
struct magic { int a, b; };
inline magic & operator ++ (magic &m) { return ++m.a, ++m.b, m; }
inline double operator * (const magic &m) { return (double)m.a / m.b; }
inline bool operator != (const magic &l, const magic &r) { return l.a != r.a || l.b != r.b; }
 
//auto t = for_each(magic {44, 11}, magic {144, 111}, [](double x) { cout << x << '\n'; });
 
int main() {
	copy(magic {44, 11}, magic {144, 111}, ostream_iterator<double>(std::cout, "\n"));
}

In file included from /usr/include/c++/5/bits/char_traits.h:39:0,
                 from /usr/include/c++/5/ios:40,
                 from /usr/include/c++/5/ostream:38,
                 from /usr/include/c++/5/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/5/bits/stl_algobase.h: In instantiation of '_OI std::__copy_move_a(_II, _II, _OI) [with bool _IsMove = false; _II = magic; _OI = std::ostream_iterator<double>]':
/usr/include/c++/5/bits/stl_algobase.h:436:45:   required from '_OI std::__copy_move_a2(_II, _II, _OI) [with bool _IsMove = false; _II = magic; _OI = std::ostream_iterator<double>]'
/usr/include/c++/5/bits/stl_algobase.h:469:8:   required from '_OI std::copy(_II, _II, _OI) [with _II = magic; _OI = std::ostream_iterator<double>]'
prog.cpp:15:82:   required from here
/usr/include/c++/5/bits/stl_algobase.h:391:57: error: no type named 'value_type' in 'struct std::iterator_traits<magic>'
       typedef typename iterator_traits<_II>::value_type _ValueTypeI;
                                                         ^
/usr/include/c++/5/bits/stl_algobase.h:393:64: error: no type named 'iterator_category' in 'struct std::iterator_traits<magic>'
       typedef typename iterator_traits<_II>::iterator_category _Category;
                                                                ^
/usr/include/c++/5/bits/stl_algobase.h:397:9: error: no type named 'value_type' in 'struct std::iterator_traits<magic>'
         && __are_same<_ValueTypeI, _ValueTypeO>::__value);
         ^
/usr/include/c++/5/bits/stl_algobase.h:400:44: error: no type named 'iterator_category' in 'struct std::iterator_traits<magic>'
                        _Category>::__copy_m(__first, __last, __result);
                                            ^

Standard output is empty