Borderou de evaluare (job #398678)

Eroare de compilare: user.cpp:29:13: warning: multi-character character constant [-Wmultichar] user.cpp:29:22: warning: multi-character character constant [-Wmultichar] user.cpp: In function ‘int main()’: user.cpp:13:16: error: cannot bind ‘std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}’ lvalue to ‘std::basic_istream<char>&&’ /usr/include/c++/4.6/istream:852:5: error: initializing argument 1 of ‘std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&) [with _CharT = char, _Traits = std::char_traits<char>, _Tp = const char [2]]’ user.cpp:23:9: error: ‘a2’ was not declared in this scope