Eroare de compilare: user.cpp: In member function ‘std::stringstream Chocolate::matching()’: user.cpp:47:12: error: use of deleted function ‘std::basic_stringstream<char>::basic_stringstream(const std::basic_stringstream<char>&)’ return str; ^ In file included from user.cpp:4:0: /usr/include/c++/4.8/sstream:502:11: note: ‘std::basic_stringstream<char>::basic_stringstream(const std::basic_stringstream<char>&)’ is implicitly deleted because the default definition would be ill-formed: class basic_stringstream : public basic_iostream<_CharT, _Traits> ^ /usr/include/c++/4.8/sstream:502:11: error: use of deleted function ‘std::basic_iostream<char>::basic_iostream(const std::basic_iostream<char>&)’ In file included from /usr/include/c++/4.8/fstream:38:0, from user.cpp:2: /usr/include/c++/4.8/istream:795:11: note: ‘std::basic_iostream<char>::basic_iostream(const std::basic_iostream<char>&)’ is implicitly deleted because the default definition would be ill-formed: class basic_iostream ^ /usr/include/c++/4.8/istream:795:11: error: use of deleted function ‘std::basic_istream<char>::basic_istream(const std::basic_istream<char>&)’ /usr/include/c++/4.8/istream:58:11: note: ‘std::basic_istream<char>::basic_istream(const std::basic_istream<char>&)’ is implicitly deleted because the default definition would be ill-formed: class basic_istream : virtual public basic_ios<_CharT, _Traits> ^ /usr/include/c++/4.8/istream:58:11: error: use of deleted function ‘std::basic_ios<char>::basic_ios(const std::basic_ios<char>&)’ In file included from /usr/include/c++/4.8/ios:44:0, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:2: /usr/include/c++/4.8/bits/basic_ios.h:66:11: note: ‘std::basic_ios<char>::basic_ios(const std::basic_ios<char>&)’ is implicitly deleted because the default definition would be ill-formed: class basic_ios : public ios_base ^ In file included from /usr/include/c++/4.8/ios:42:0, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:2: /usr/include/c++/4.8/bits/ios_base.h:786:5: error: ‘std::ios_base::ios_base(const std::ios_base&)’ is private ios_base(const ios_base&); ^ In file included from /usr/include/c++/4.8/ios:44:0, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:2: /usr/include/c++/4.8/bits/basic_ios.h:66:11: error: within this context class basic_ios : public ios_base ^ In file included from /usr/include/c++/4.8/fstream:38:0, from user.cpp:2: /usr/include/c++/4.8/istream:795:11: error: use of deleted function ‘std::basic_ostream<char>::basic_ostream(const std::basic_ostream<char>&)’ class basic_iostream ^ In file included from /usr/include/c++/4.8/istream:39:0, from /usr/include/c++/4.8/fstream:38, from user.cpp:2: /usr/include/c++/4.8/ostream:58:11: note: ‘std::basic_ostream<char>::basic_ostream(const std::basic_ostream<char>&)’ is implicitly deleted because the default definition would be ill-formed: class basic_ostream : virtual public basic_ios<_CharT, _Traits>