Compilare: user.cpp: In function ‘bool GrafEulerian(const Graf&, int&)’: user.cpp:13:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < graf.size(); ++i) { ^ user.cpp: In function ‘int main()’: user.cpp:67:20: warning: variable ‘c’ set but not used [-Wunused-but-set-variable] char a, b, c; ^ user.cpp:80:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] fout << (configuratie.size() == n ? 1 : 0) << "\n"; ^