Eroare de compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:22:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[x].size();i++) ^ user.cpp:41:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[x].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:187:16: error: no matching function for call to ‘getline(InParser&, std::string&)’ getline(f,s);ch=0; ^ user.cpp:187:16: note: candidates are: In file included from /usr/include/stdio.h:931:0, from /usr/include/c++/4.8/cstdio:42, from /usr/include/c++/4.8/ext/string_conversions.h:43, from /usr/include/c++/4.8/bits/basic_string.h:2815, from /usr/include/c++/4.8/string:52, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:1: /usr/include/i386-linux-gnu/bits/stdio.h:116:1: note: __ssize_t getline(char**, size_t*, FILE*) getline (char **__lineptr, size_t *__n, FILE *__stream) ^ /usr/include/i386-linux-gnu/bits/stdio.h:116:1: note: candidate expects 3 arguments, 2 provided In file included from /usr/include/c++/4.8/string:52:0, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:1: /usr/include/c++/4.8/bits/basic_string.h:2793:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::getline(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&) getline(basic_istream<_CharT, _Traits>& __is, ^ /usr/include/c++/4.8/bits/basic_string.h:2793:5: note: template argument deduction/substitution failed: user.cpp:187:16: note: ‘InParser’ is not derived from ‘std::basic_istream<_CharT, _Traits>’ getline(f,s);ch=0; ^ In file included from /usr/include/c++/4.8/string:53:0, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:1: /usr/include/c++/4.8/bits/basic_string.tcc:1068:5: note: template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::getline(std::basic_istream<_CharT, _Traits>&, std::basic_string<_CharT, _Traits, _Alloc>&, _CharT) getline(basic_istream<_CharT, _Traits>& __in,