Eroare de compilare: user.cpp: In function ‘void citire()’: user.cpp:18:9: error: reference to ‘next’ is ambiguous next[i]=x; ^~~~ user.cpp:10:5: note: candidates are: int next [100004] int next[nmax],vis[nmax],in[nmax]; ^~~~ In file included from /usr/include/c++/6/bits/stl_algobase.h:66:0, from /usr/include/c++/6/vector:60, from user.cpp:2: /usr/include/c++/6/bits/stl_iterator_base_funcs.h:205:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type) next(_ForwardIterator __x, typename ^~~~ user.cpp: In function ‘void do_chains()’: user.cpp:35:17: error: reference to ‘next’ is ambiguous nod=next[nod]; ^~~~ user.cpp:10:5: note: candidates are: int next [100004] int next[nmax],vis[nmax],in[nmax]; ^~~~ In file included from /usr/include/c++/6/bits/stl_algobase.h:66:0, from /usr/include/c++/6/vector:60, from user.cpp:2: /usr/include/c++/6/bits/stl_iterator_base_funcs.h:205:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type) next(_ForwardIterator __x, typename ^~~~ user.cpp: In function ‘void do_cycles()’: user.cpp:51:17: error: reference to ‘next’ is ambiguous nod=next[nod]; ^~~~ user.cpp:10:5: note: candidates are: int next [100004] int next[nmax],vis[nmax],in[nmax]; ^~~~ In file included from /usr/include/c++/6/bits/stl_algobase.h:66:0, from /usr/include/c++/6/vector:60, from user.cpp:2: /usr/include/c++/6/bits/stl_iterator_base_funcs.h:205:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type) next(_ForwardIterator __x, typename ^~~~ user.cpp: In function ‘int main()’: user.cpp:67:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("telefon2.in","r",stdin); ^ user.cpp:68:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("telefon2.out","w",stdout); ^ user.cpp: In function ‘void citire()’: user.cpp:14:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^