Compilare: user.cpp: In member function ‘void message::afisareIndici(std::ofstream&)’: user.cpp:71:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Ind.size(); ++i) idx.push_back(i); ^ user.cpp:77:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < idx.size() ; ++i) { ^ user.cpp: In member function ‘void message::getind(const message&, const int&)’: user.cpp:86:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p < Ind.size() && Ind[p] == i && value[p] == oth.value[i]) ^