Compilare: user.cpp: In function ‘int find(std::vector<Muchie>&, double)’: user.cpp:160:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (rez + step < v.size() && v[rez + step].alpha <= alpha) ^ user.cpp: In function ‘void expand(std::vector<Muchie>&, int)’: user.cpp:171:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (poz < 0 || poz >= a.size()) ^ user.cpp: In function ‘void cleanup(std::vector<int>&)’: user.cpp:242:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1 ; i < v.size() ; i++) ^