Compilare: user.cpp: In function ‘long double getarea(Pol&)’: user.cpp:35:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 2; i < pol.size(); ++i) ^ user.cpp: In function ‘Pnt split(Pol&, Pnt)’: user.cpp:56:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < pol.size(); ++i) ^ user.cpp:61:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < pol.size(); ++i) ^