Compilare: user.cpp: In static member function ‘static void ZAlgorithm::makeZValues(const string&, std::vector<int>&)’: user.cpp:31:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<S.size(); ++i){ ^ user.cpp: In function ‘int main()’: user.cpp:61:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=(int)pattern.size(); i<S.size(); ++i){ ^ user.cpp:62:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (z[i] >= pattern.size()){ ^