Eroare de compilare: user.cpp: In function ‘void citire()’: user.cpp:17:25: warning: NULL used in arithmetic [-Wpointer-arith] if (linie[0] != NULL) ^ user.cpp:20:41: warning: NULL used in arithmetic [-Wpointer-arith] for (int i = 0; linie[i] != NULL; i++) ^ user.cpp: In function ‘int main()’: user.cpp:38:20: error: reference to ‘next’ is ambiguous maxm[nrc] = 1, next[nrc] = nrc + 1; ^ user.cpp:9:18: note: candidates are: int next [20001] int maxm[20001], next[20001], x[30][20001], nr[30], lg[20001]; ^ 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/ostream:38, from /usr/include/c++/5/iostream:39, from user.cpp:1: /usr/include/c++/5/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:49:17: error: reference to ‘next’ is ambiguous next[i] = x[litera][j]; ^ user.cpp:9:18: note: candidates are: int next [20001] int maxm[20001], next[20001], x[30][20001], nr[30], lg[20001]; ^ 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/ostream:38, from /usr/include/c++/5/iostream:39, from user.cpp:1: /usr/include/c++/5/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:61:43: error: reference to ‘next’ is ambiguous for (int i = maxm[ind]; i <= nrc; i = next[i]) ^ user.cpp:9:18: note: candidates are: int next [20001] int maxm[20001], next[20001], x[30][20001], nr[30], lg[20001]; ^ 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/ostream:38, from /usr/include/c++/5/iostream:39, from user.cpp:1: