Compilare: user.cpp: In member function ‘void Numar::normalize()’: user.cpp:21:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v.size() - 1; ++i) { ^ user.cpp: In function ‘Numar operator+(const Numar&, const Numar&)’: user.cpp:35:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < left.v.size(); ++i) sol.v[i] += left.v[i]; ^ user.cpp:36:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < right.v.size(); ++i) sol.v[i] += right.v[i]; ^