Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:13:5: error: reference to ‘prev’ is ambiguous prev=0; ^ user.cpp:8:52: note: candidates are: int prev int nr[1000001],l[1001],yes[1000001],n,m,len,total,prev,current,next,finally[1001],k; ^ In file included from /usr/local/include/c++/4.8.0/bits/stl_algobase.h:66:0, from /usr/local/include/c++/4.8.0/bits/char_traits.h:39, from /usr/local/include/c++/4.8.0/ios:40, from /usr/local/include/c++/4.8.0/istream:38, from /usr/local/include/c++/4.8.0/fstream:38, from user.cpp:1: /usr/local/include/c++/4.8.0/bits/stl_iterator_base_funcs.h:193:5: note: template<class _BidirectionalIterator> _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type) prev(_BidirectionalIterator __x, typename ^ user.cpp:16:14: error: reference to ‘next’ is ambiguous fin>>next; ^ user.cpp:8:65: note: candidates are: int next int nr[1000001],l[1001],yes[1000001],n,m,len,total,prev,current,next,finally[1001],k; ^ In file included from /usr/local/include/c++/4.8.0/bits/stl_algobase.h:66:0, from /usr/local/include/c++/4.8.0/bits/char_traits.h:39, from /usr/local/include/c++/4.8.0/ios:40, from /usr/local/include/c++/4.8.0/istream:38, from /usr/local/include/c++/4.8.0/fstream:38, from user.cpp:1: /usr/local/include/c++/4.8.0/bits/stl_iterator_base_funcs.h:184:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type) next(_ForwardIterator __x, typename ^ user.cpp:17:13: error: reference to ‘prev’ is ambiguous if (prev==next) nr[prev]++; ^ user.cpp:8:52: note: candidates are: int prev int nr[1000001],l[1001],yes[1000001],n,m,len,total,prev,current,next,finally[1001],k; ^ In file included from /usr/local/include/c++/4.8.0/bits/stl_algobase.h:66:0, from /usr/local/include/c++/4.8.0/bits/char_traits.h:39, from /usr/local/include/c++/4.8.0/ios:40, from /usr/local/include/c++/4.8.0/istream:38, from /usr/local/include/c++/4.8.0/fstream:38, from user.cpp:1: /usr/local/include/c++/4.8.0/bits/stl_iterator_base_funcs.h:193:5: note: template<class _BidirectionalIterator> _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type) prev(_BidirectionalIterator __x, typename ^ user.cpp:17:19: error: reference to ‘next’ is ambiguous if (prev==next) nr[prev]++; ^ user.cpp:8:65: note: candidates are: int next