Eroare de compilare: user.cpp:6:9: error: field ‘parent’ has incomplete type Nod parent; ^ user.cpp: In function ‘Nod makeset(int)’: user.cpp:11:3: error: ‘struct Nod’ has no member named ‘parent’ k.parent=k; ^ user.cpp: In function ‘Nod findset(Nod)’: user.cpp:16:7: error: ‘struct Nod’ has no member named ‘parent’ if (x.parent!=x) x.parent=findset(x.parent); ^ user.cpp:16:20: error: ‘struct Nod’ has no member named ‘parent’ if (x.parent!=x) x.parent=findset(x.parent); ^ user.cpp:16:37: error: ‘struct Nod’ has no member named ‘parent’ if (x.parent!=x) x.parent=findset(x.parent); ^ user.cpp:17:10: error: ‘struct Nod’ has no member named ‘parent’ return x.parent; ^ user.cpp: In function ‘void Union(Nod, Nod)’: user.cpp:23:10: error: no match for ‘operator==’ (operand types are ‘Nod’ and ‘Nod’) if (xroot==yroot) return; ^ user.cpp:23:10: note: candidates are: In file included from /usr/include/c++/4.8/iosfwd:40:0, from /usr/include/c++/4.8/ios:38, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:1: /usr/include/c++/4.8/bits/postypes.h:216:5: note: template<class _StateT> bool std::operator==(const std::fpos<_StateT>&, const std::fpos<_StateT>&) operator==(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs) ^ /usr/include/c++/4.8/bits/postypes.h:216:5: note: template argument deduction/substitution failed: user.cpp:23:12: note: ‘Nod’ is not derived from ‘const std::fpos<_StateT>’ if (xroot==yroot) return; ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:64:0, from /usr/include/c++/4.8/bits/char_traits.h:39, from /usr/include/c++/4.8/ios:40, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:1: /usr/include/c++/4.8/bits/stl_pair.h:214:5: note: template<class _T1, class _T2> constexpr bool std::operator==(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&) operator==(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y) ^ /usr/include/c++/4.8/bits/stl_pair.h:214:5: note: template argument deduction/substitution failed: user.cpp:23:12: note: ‘Nod’ is not derived from ‘const std::pair<_T1, _T2>’ if (xroot==yroot) return; ^