Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:23:11: warning: statement has no effect [-Wunused-value] x[1000]; ^ user.cpp:24:11: warning: statement has no effect [-Wunused-value] y[1000]; ^ user.cpp:46:21: error: no match for ‘operator==’ (operand types are ‘latura’ and ‘latura’) while(a[i]==a[i-1]) ^ user.cpp:46:21: note: candidates are: In file included from /usr/include/c++/4.8/bits/stl_algo.h:66:0, from /usr/include/c++/4.8/algorithm:62, from user.cpp:3: /usr/include/c++/4.8/functional:2540:5: note: template<class _Res, class ... _Args> bool std::operator==(std::nullptr_t, const std::function<_Res(_ArgTypes ...)>&) operator==(nullptr_t, const function<_Res(_Args...)>& __f) noexcept ^ /usr/include/c++/4.8/functional:2540:5: note: template argument deduction/substitution failed: user.cpp:46:28: note: cannot convert ‘a[i]’ (type ‘latura’) to type ‘std::nullptr_t’ while(a[i]==a[i-1]) ^ In file included from /usr/include/c++/4.8/bits/stl_algo.h:66:0, from /usr/include/c++/4.8/algorithm:62, from user.cpp:3: /usr/include/c++/4.8/functional:2534:5: note: template<class _Res, class ... _Args> bool std::operator==(const std::function<_Res(_ArgTypes ...)>&, std::nullptr_t) operator==(const function<_Res(_Args...)>& __f, nullptr_t) noexcept ^ /usr/include/c++/4.8/functional:2534:5: note: template argument deduction/substitution failed: user.cpp:46:28: note: ‘latura’ is not derived from ‘const std::function<_Res(_ArgTypes ...)>’ while(a[i]==a[i-1]) ^ In file included from /usr/include/c++/4.8/functional:55:0, from /usr/include/c++/4.8/bits/stl_algo.h:66, from /usr/include/c++/4.8/algorithm:62, from user.cpp:3: /usr/include/c++/4.8/tuple:811:5: note: template<class ... _TElements, class ... _UElements> constexpr bool std::operator==(const std::tuple<_Elements ...>&, const std::tuple<_Elements ...>&) operator==(const tuple<_TElements...>& __t, ^ /usr/include/c++/4.8/tuple:811:5: note: template argument deduction/substitution failed: user.cpp:46:28: note: ‘latura’ is not derived from ‘const std::tuple<_Elements ...>’ while(a[i]==a[i-1]) ^ In file included from /usr/include/c++/4.8/tuple:39:0, from /usr/include/c++/4.8/functional:55, from /usr/include/c++/4.8/bits/stl_algo.h:66, from /usr/include/c++/4.8/algorithm:62, from user.cpp:3: /usr/include/c++/4.8/array:228:5: note: template<class _Tp, unsigned int _Nm> bool std::operator==(const std::array<_Tp, _Nm>&, const std::array<_Tp, _Nm>&) operator==(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two) ^