Compilare: user.cpp: In function ‘void transformare(std::string)’: user.cpp:17:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=1; i<s.length(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:38:123: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] { fout<<"NU"<<endl; for (i=0; i<nrg; i++) fout<<q[i]<<" ";} else { fout<<"DA"<<endl; for (int zz=0; zz<h.length()-1; zz++) fout<<h[zz]; } ^