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#include <iostream>
#include <string>
#include <algorithm>
using namespace std;
 
int main()
{
  int z = 0;
  string name[] = {"john", "bobby", "dear", 
                   "test1", "catherine", "nomi", 
                   "shinta", "martin", "abe", 
                   "may", "zeno", "zack", "angeal", "gabby"};
 
  sort(name[0],name[z]);
 
  for(int y = 0; y < z; y++)
  {
    cout << name[z] << endl;
  }
  return 0;
}

In file included from /usr/include/c++/6/algorithm:62:0,
                 from prog.cpp:3:
/usr/include/c++/6/bits/stl_algo.h: In instantiation of ‘void std::__sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = std::__cxx11::basic_string<char>; _Compare = __gnu_cxx::__ops::_Iter_less_iter]’:
/usr/include/c++/6/bits/stl_algo.h:4707:18:   required from ‘void std::sort(_RAIter, _RAIter) [with _RAIter = std::__cxx11::basic_string<char>]’
prog.cpp:14:23:   required from here
/usr/include/c++/6/bits/stl_algo.h:1966:22: error: no match for ‘operator-’ (operand types are ‘std::__cxx11::basic_string<char>’ and ‘std::__cxx11::basic_string<char>’)
     std::__lg(__last - __first) * 2,
               ~~~~~~~^~~~~~~~~
In file included from /usr/include/c++/6/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/6/bits/char_traits.h:39,
                 from /usr/include/c++/6/ios:40,
                 from /usr/include/c++/6/ostream:38,
                 from /usr/include/c++/6/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/6/bits/stl_iterator.h:333:5: note: candidate: template<class _Iterator> decltype ((__x.base() - __y.base())) std::operator-(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)
     operator-(const reverse_iterator<_Iterator>& __x,
     ^~~~~~~~
/usr/include/c++/6/bits/stl_iterator.h:333:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/6/algorithm:62:0,
                 from prog.cpp:3:
/usr/include/c++/6/bits/stl_algo.h:1966:22: note:   ‘std::__cxx11::basic_string<char>’ is not derived from ‘const std::reverse_iterator<_Iterator>’
     std::__lg(__last - __first) * 2,
               ~~~~~~~^~~~~~~~~
In file included from /usr/include/c++/6/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/6/bits/char_traits.h:39,
                 from /usr/include/c++/6/ios:40,
                 from /usr/include/c++/6/ostream:38,
                 from /usr/include/c++/6/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/6/bits/stl_iterator.h:387:5: note: candidate: template<class _IteratorL, class _IteratorR> decltype ((__y.base() - __x.base())) std::operator-(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)
     operator-(const reverse_iterator<_IteratorL>& __x,
     ^~~~~~~~
/usr/include/c++/6/bits/stl_iterator.h:387:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/6/algorithm:62:0,
                 from prog.cpp:3:
/usr/include/c++/6/bits/stl_algo.h:1966:22: note:   ‘std::__cxx11::basic_string<char>’ is not derived from ‘const std::reverse_iterator<_Iterator>’
     std::__lg(__last - __first) * 2,
               ~~~~~~~^~~~~~~~~
In file included from /usr/include/c++/6/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/6/bits/char_traits.h:39,
                 from /usr/include/c++/6/ios:40,
                 from /usr/include/c++/6/ostream:38,
                 from /usr/include/c++/6/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/6/bits/stl_iterator.h:1186:5: note: candidate: template<class _IteratorL, class _IteratorR> decltype ((__x.base() - __y.base())) std::operator-(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&)
     operator-(const move_iterator<_IteratorL>& __x,
     ^~~~~~~~
/usr/include/c++/6/bits/stl_iterator.h:1186:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/6/algorithm:62:0,
                 from prog.cpp:3:
/usr/include/c++/6/bits/stl_algo.h:1966:22: note:   ‘std::__cxx11::basic_string<char>’ is not derived from ‘const std::move_iterator<_IteratorL>’
     std::__lg(__last - __first) * 2,
               ~~~~~~~^~~~~~~~~
In file included from /usr/include/c++/6/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/6/bits/char_traits.h:39,
                 from /usr/include/c++/6/ios:40,
                 from /usr/include/c++/6/ostream:38,
                 from /usr/include/c++/6/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/6/bits/stl_iterator.h:1193:5: note: candidate: template<class _Iterator> decltype ((__x.base() - __y.base())) std::operator-(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorL>&)
     operator-(const move_iterator<_Iterator>& __x,
     ^~~~~~~~
/usr/include/c++/6/bits/stl_iterator.h:1193:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/6/algorithm:62:0,
                 from prog.cpp:3:
/usr/include/c++/6/bits/stl_algo.h:1966:22: note:   ‘std::__cxx11::basic_string<char>’ is not derived from ‘const std::move_iterator<_IteratorL>’
     std::__lg(__last - __first) * 2,
               ~~~~~~~^~~~~~~~~
In file included from /usr/include/c++/6/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/6/bits/char_traits.h:39,
                 from /usr/include/c++/6/ios:40,
                 from /usr/include/c++/6/ostream:38,
                 from /usr/include/c++/6/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/6/bits/stl_iterator.h:959:5: note: candidate: template<class _Iterator, class _Container> typename __gnu_cxx::__normal_iterator<_Iterator, _Container>::difference_type __gnu_cxx::operator-(const __gnu_cxx::__normal_iterator<_Iterator, _Container>&, const __gnu_cxx::__normal_iterator<_Iterator, _Container>&)
     operator-(const __normal_iterator<_Iterator, _Container>& __lhs,
     ^~~~~~~~
/usr/include/c++/6/bits/stl_iterator.h:959:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/6/algorithm:62:0,
                 from prog.cpp:3:
/usr/include/c++/6/bits/stl_algo.h:1966:22: note:   ‘std::__cxx11::basic_string<char>’ is not derived from ‘const __gnu_cxx::__normal_iterator<_Iterator, _Container>’
     std::__lg(__last - __first) * 2,
               ~~~~~~~^~~~~~~~~
In file included from /usr/include/c++/6/bits/stl_algobase.h:67:0,
                 from /usr/include/c++/6/bits/char_traits.h:39,
                 from /usr/include/c++/6/ios:40,
                 from /usr/include/c++/6/ostream:38,
                 from /usr/include/c++/6/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/6/bits/stl_iterator.h:947:5: note: candidate: template<class _IteratorL, class _IteratorR, class _Container> decltype ((__lhs.base() - __rhs.base())) __gnu_cxx::operator-(const __gnu_cxx::__normal_iterator<_IteratorL, _Container>&, const __gnu_cxx::__normal_iterator<_IteratorR, _Container>&)
     operator-(const __normal_iterator<_IteratorL, _Container>& __lhs,
     ^~~~~~~~
/usr/include/c++/6/bits/stl_iterator.h:947:5: note:   template argument deduction/substitution failed:
In file included from /usr/include/c++/6/algorithm:62:0,
                 from prog.cpp:3:
/usr/include/c++/6/bits/stl_algo.h:1966:22: note:   ‘std::__cxx11::basic_string<char>’ is not derived from ‘const __gnu_cxx::__normal_iterator<_IteratorL, _Container>’
     std::__lg(__last - __first) * 2,
               ~~~~~~~^~~~~~~~~

Standard output is empty