Borderou de evaluare (job #243193)

Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:9:9: error: no match for ‘operator<<’ in ‘in << z1’ user.cpp:9:9: note: candidates are: /usr/include/c++/4.6/bits/basic_string.h:2693:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::basic_string<_CharT, _Traits, _Alloc>&) /usr/include/c++/4.6/ostream:451:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, _CharT) /usr/include/c++/4.6/ostream:456:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, char) /usr/include/c++/4.6/ostream:462:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, char) /usr/include/c++/4.6/ostream:468:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, signed char) /usr/include/c++/4.6/ostream:473:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, unsigned char) /usr/include/c++/4.6/ostream:493:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const _CharT*) /usr/include/c++/4.6/bits/ostream.tcc:323:5: note: template<class _CharT, class _Traits> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const char*) /usr/include/c++/4.6/ostream:510:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const char*) /usr/include/c++/4.6/ostream:523:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const signed char*) /usr/include/c++/4.6/ostream:528:5: note: template<class _Traits> std::basic_ostream<char, _Traits>& std::operator<<(std::basic_ostream<char, _Traits>&, const unsigned char*) /usr/include/c++/4.6/ostream:581:5: note: template<class _CharT, class _Traits, class _Tp> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&&, const _Tp&) user.cpp:12:9: error: ‘cnt’ was not declared in this scope user.cpp:20:13: error: ‘cnt’ was not declared in this scope user.cpp:25:13: error: ‘cnt’ was not declared in this scope user.cpp:31:9: error: ‘cnt2’ was not declared in this scope user.cpp:34:9: error: ‘cnt2’ was not declared in this scope user.cpp:40:9: error: ‘cnt2’ was not declared in this scope user.cpp:41:9: error: ‘else’ without a previous ‘if’ user.cpp:48:9: error: ‘cnt3’ was not declared in this scope user.cpp:51:9: error: ‘cnt3’ was not declared in this scope user.cpp:53:10: error: ‘cnt’ was not declared in this scope user.cpp:53:14: error: ‘cnt2’ was not declared in this scope user.cpp:53:19: error: ‘cnt3’ was not declared in this scope