Eroare de compilare: user.cpp:2:1: error: expected unqualified-id before numeric constant 1 ^ In file included from /usr/include/c++/5/iosfwd:40:0, from /usr/include/c++/5/ios:38, from /usr/include/c++/5/ostream:38, from /usr/include/c++/5/iostream:39, from user.cpp:57: /usr/include/c++/5/bits/postypes.h:98:11: error: ‘ptrdiff_t’ does not name a type typedef ptrdiff_t streamsize; // Signed integral type ^ In file included from /usr/include/c++/5/exception:162:0, from /usr/include/c++/5/ios:39, from /usr/include/c++/5/ostream:38, from /usr/include/c++/5/iostream:39, from user.cpp:57: /usr/include/c++/5/bits/exception_ptr.h:95:30: error: field ‘nullptr_t’ has incomplete type ‘std::__exception_ptr::exception_ptr’ exception_ptr(nullptr_t) noexcept ^ /usr/include/c++/5/bits/exception_ptr.h:75:11: note: definition of ‘class std::__exception_ptr::exception_ptr’ is not complete until the closing brace class exception_ptr ^ /usr/include/c++/5/bits/exception_ptr.h:95:30: error: expected ‘;’ at end of member declaration exception_ptr(nullptr_t) noexcept ^ /usr/include/c++/5/bits/exception_ptr.h:95:32: error: expected unqualified-id before ‘noexcept’ exception_ptr(nullptr_t) noexcept ^ In file included from /usr/include/c++/5/bits/stl_algobase.h:62:0, 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:57: /usr/include/c++/5/ext/type_traits.h:160:35: error: ‘__gnu_cxx::__is_null_pointer’ declared as an ‘inline’ variable __is_null_pointer(std::nullptr_t) ^ /usr/include/c++/5/ext/type_traits.h:160:35: error: ‘bool __gnu_cxx::__is_null_pointer’ redeclared as different kind of symbol /usr/include/c++/5/ext/type_traits.h:155:5: note: previous declaration ‘template<class _Type> bool __gnu_cxx::__is_null_pointer(_Type)’ __is_null_pointer(_Type) ^ /usr/include/c++/5/ext/type_traits.h:160:21: error: ‘nullptr_t’ is not a member of ‘std’ __is_null_pointer(std::nullptr_t) ^ In file included from /usr/include/c++/5/bits/move.h:57:0, from /usr/include/c++/5/bits/stl_pair.h:59, from /usr/include/c++/5/bits/stl_algobase.h:64, from /usr/include/c++/5/bits/char_traits.h:39, from /usr/include/c++/5/ios:40, from /usr/include/c++/5/ostream:38,