Compilare: user.cpp: In function ‘void Adauga(std::string, int)’: user.cpp:29:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < str.size(); i++) //adaug un fiu ^ user.cpp: In function ‘int Cauta(std::string)’: user.cpp:45:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < x.size(); ++i) ^ user.cpp: In function ‘int cmlp(std::string)’: user.cpp:61:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < x.size(); ++i) ^