Eroare de compilare: main.cpp: In function 'int main()': main.cpp:15:9: warning: unused variable 'q' [-Wunused-variable] int q = 1; ^ In file included from /usr/include/c++/6/bits/stl_algobase.h:71:0, from /usr/include/c++/6/bits/char_traits.h:39, from /usr/include/c++/6/ios:40, from /usr/include/c++/6/istream:38, from /usr/include/c++/6/sstream:38, from /usr/include/c++/6/complex:45, from /usr/include/c++/6/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:52, from main.cpp:1: /usr/include/c++/6/bits/predefined_ops.h: In instantiation of 'constexpr bool __gnu_cxx::__ops::_Iter_less_iter::operator()(_Iterator1, _Iterator2) const [with _Iterator1 = int; _Iterator2 = int]': /usr/include/c++/6/bits/stl_algo.h:1844:14: required from 'void std::__insertion_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = int; _Compare = __gnu_cxx::__ops::_Iter_less_iter]' /usr/include/c++/6/bits/stl_algo.h:1882:25: required from 'void std::__final_insertion_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = int; _Compare = __gnu_cxx::__ops::_Iter_less_iter]' /usr/include/c++/6/bits/stl_algo.h:1968:31: required from 'void std::__sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = int; _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 = int]' main.cpp:24:25: required from here /usr/include/c++/6/bits/predefined_ops.h:43:16: error: invalid type argument of unary '*' (have 'int') { return *__it1 < *__it2; } ^~~~~~ /usr/include/c++/6/bits/predefined_ops.h:43:25: error: invalid type argument of unary '*' (have 'int') { return *__it1 < *__it2; } ^~~~~~ In file included from /usr/include/c++/6/algorithm:62:0, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:65, from main.cpp:1: /usr/include/c++/6/bits/stl_algo.h: In instantiation of 'void std::__insertion_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = int; _Compare = __gnu_cxx::__ops::_Iter_less_iter]': /usr/include/c++/6/bits/stl_algo.h:1882:25: required from 'void std::__final_insertion_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = int; _Compare = __gnu_cxx::__ops::_Iter_less_iter]' /usr/include/c++/6/bits/stl_algo.h:1968:31: required from 'void std::__sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = int; _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 = int]' main.cpp:24:25: required from here /usr/include/c++/6/bits/stl_algo.h:1847:3: error: no type named 'value_type' in 'struct std::iterator_traits<int>' __val = _GLIBCXX_MOVE(*__i); ^~~~~ /usr/include/c++/6/bits/stl_algo.h:1849:8: error: invalid type argument of unary '*' (have 'int') *__first = _GLIBCXX_MOVE(__val); ^~~~~~~~ /usr/include/c++/6/bits/stl_algo.h:1847:3: error: no type named 'value_type' in 'struct std::iterator_traits<int>' __val = _GLIBCXX_MOVE(*__i); ^~~~~ In file included from /usr/include/c++/6/bits/stl_algo.h:61:0, from /usr/include/c++/6/algorithm:62, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:65, from main.cpp:1: /usr/include/c++/6/bits/stl_heap.h: In instantiation of 'void std::__make_heap(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = int; _Compare = __gnu_cxx::__ops::_Iter_less_iter]': /usr/include/c++/6/bits/stl_algo.h:1669:23: required from 'void std::__heap_select(_RandomAccessIterator, _RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = int; _Compare = __gnu_cxx::__ops::_Iter_less_iter]' /usr/include/c++/6/bits/stl_algo.h:1930:25: required from 'void std::__partial_sort(_RandomAccessIterator, _RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = int; _Compare = __gnu_cxx::__ops::_Iter_less_iter]' /usr/include/c++/6/bits/stl_algo.h:1945:27: required from 'void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size, _Compare) [with _RandomAccessIterator = int; _Size = int; _Compare = __gnu_cxx::__ops::_Iter_less_iter]' Non zero exit status: 1