Eroare de compilare: user.cpp: In function ‘void do_it(int)’: user.cpp:21:10: error: reference to ‘prev’ is ambiguous { int d=prev,r=1; ^ user.cpp:11:7: note: candidates are: int prev int n,prev,m,nr; ^ In file included from /usr/include/c++/5/bits/stl_algobase.h:66:0, from /usr/include/c++/5/bits/char_traits.h:39, from /usr/include/c++/5/ios:40, from /usr/include/c++/5/istream:38, from /usr/include/c++/5/fstream:38, from user.cpp:1: /usr/include/c++/5/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:22:15: error: reference to ‘prev’ is ambiguous for(int i=prev+1;i<=k;i++) ^ user.cpp:11:7: note: candidates are: int prev int n,prev,m,nr; ^ In file included from /usr/include/c++/5/bits/stl_algobase.h:66:0, from /usr/include/c++/5/bits/char_traits.h:39, from /usr/include/c++/5/ios:40, from /usr/include/c++/5/istream:38, from /usr/include/c++/5/fstream:38, from user.cpp:1: /usr/include/c++/5/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:29:36: error: ‘r’ was not declared in this scope if(b>=date[i].z+date[d].z) r++,d=i; ^ user.cpp:31:8: error: ‘r’ was not declared in this scope if(r>m) m=r,nr=1; ^ user.cpp: In function ‘void read()’: user.cpp:45:73: error: reference to ‘prev’ is ambiguous if(date[i-1].y*date[i].x!=date[i-1].x*date[i].y) h++,do_it(i-1),prev=i; ^ user.cpp:11:7: note: candidates are: int prev int n,prev,m,nr; ^ In file included from /usr/include/c++/5/bits/stl_algobase.h:66:0, from /usr/include/c++/5/bits/char_traits.h:39, from /usr/include/c++/5/ios:40, from /usr/include/c++/5/istream:38, from /usr/include/c++/5/fstream:38, from user.cpp:1: