Eroare de compilare: main.cpp: In function 'int main()': main.cpp:58:17: error: return-statement with no value, in function returning 'int' [-fpermissive] 58 | return; | ^~~~~~ In file included from /usr/include/c++/10/bits/stl_algobase.h:71, from /usr/include/c++/10/bits/char_traits.h:39, from /usr/include/c++/10/ios:40, from /usr/include/c++/10/istream:38, from /usr/include/c++/10/fstream:38, from main.cpp:1: /usr/include/c++/10/bits/predefined_ops.h: In instantiation of 'constexpr bool __gnu_cxx::__ops::_Iter_less_iter::operator()(_Iterator1, _Iterator2) const [with _Iterator1 = loto*; _Iterator2 = loto*]': /usr/include/c++/10/bits/stl_algo.h:82:17: required from 'void std::__move_median_to_first(_Iterator, _Iterator, _Iterator, _Iterator, _Compare) [with _Iterator = loto*; _Compare = __gnu_cxx::__ops::_Iter_less_iter]' /usr/include/c++/10/bits/stl_algo.h:1924:34: required from '_RandomAccessIterator std::__unguarded_partition_pivot(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = loto*; _Compare = __gnu_cxx::__ops::_Iter_less_iter]' /usr/include/c++/10/bits/stl_algo.h:1958:38: required from 'void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size, _Compare) [with _RandomAccessIterator = loto*; _Size = long int; _Compare = __gnu_cxx::__ops::_Iter_less_iter]' /usr/include/c++/10/bits/stl_algo.h:1974:25: required from 'void std::__sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = loto*; _Compare = __gnu_cxx::__ops::_Iter_less_iter]' /usr/include/c++/10/bits/stl_algo.h:4861:18: required from 'void std::sort(_RAIter, _RAIter) [with _RAIter = loto*]' main.cpp:41:23: required from here /usr/include/c++/10/bits/predefined_ops.h:43:23: error: no match for 'operator<' (operand types are 'loto' and 'loto') 43 | { return *__it1 < *__it2; } | ~~~~~~~^~~~~~~~ In file included from /usr/include/c++/10/bits/stl_algobase.h:67, from /usr/include/c++/10/bits/char_traits.h:39, from /usr/include/c++/10/ios:40, from /usr/include/c++/10/istream:38, from /usr/include/c++/10/fstream:38, from main.cpp:1: /usr/include/c++/10/bits/stl_iterator.h:1121:5: note: candidate: 'template<class _IteratorL, class _IteratorR, class _Container> bool __gnu_cxx::operator<(const __gnu_cxx::__normal_iterator<_IteratorL, _Container>&, const __gnu_cxx::__normal_iterator<_IteratorR, _Container>&)' 1121 | operator<(const __normal_iterator<_IteratorL, _Container>& __lhs, | ^~~~~~~~ /usr/include/c++/10/bits/stl_iterator.h:1121:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/10/bits/stl_algobase.h:71, from /usr/include/c++/10/bits/char_traits.h:39, from /usr/include/c++/10/ios:40, from /usr/include/c++/10/istream:38, from /usr/include/c++/10/fstream:38, from main.cpp:1: /usr/include/c++/10/bits/predefined_ops.h:43:23: note: 'loto' is not derived from 'const __gnu_cxx::__normal_iterator<_IteratorL, _Container>' 43 | { return *__it1 < *__it2; } | ~~~~~~~^~~~~~~~ In file included from /usr/include/c++/10/bits/stl_algobase.h:67, from /usr/include/c++/10/bits/char_traits.h:39, from /usr/include/c++/10/ios:40, from /usr/include/c++/10/istream:38, from /usr/include/c++/10/fstream:38, from main.cpp:1: /usr/include/c++/10/bits/stl_iterator.h:1129:5: note: candidate: 'template<class _Iterator, class _Container> bool __gnu_cxx::operator<(const __gnu_cxx::__normal_iterator<_Iterator, _Container>&, const __gnu_cxx::__normal_iterator<_Iterator, _Container>&)' 1129 | operator<(const __normal_iterator<_Iterator, _Container>& __lhs, | ^~~~~~~~ /usr/include/c++/10/bits/stl_iterator.h:1129:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/10/bits/stl_algobase.h:71, Non zero exit status: 1