Compilare: user.cpp: In member function ‘bool cmpp::operator()(const putere&, const putere&) const’: user.cpp:7:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] #define min(a,b) ((a)<(b)?(a):(b)) ^ user.cpp:22:23: note: in expansion of macro ‘min’ for(int i=0;i<min(a.p.size(),b.p.size());i++){ ^ user.cpp:27:5: warning: control reaches end of non-void function [-Wreturn-type] } ^