Compilare: main.cpp: In function 'std::ifstream& operator>>(std::ifstream&, Automat&)': main.cpp:40:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In member function 'bool Automat::checkWord(std::__cxx11::string&)': main.cpp:47:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < s.size(); i++) ~~^~~~~~~~~~ main.cpp:52:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < muchie[nod][s[i] - 'a'].size(); j++) ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~