Compilare: user.cpp: In function ‘double Geometry::SignedArea(std::vector<std::complex<double> >&)’: user.cpp:64:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < P.size(); ++i) { ^ user.cpp: In function ‘int Geometry::PointInPolygon(Geometry::Point, std::vector<std::complex<double> >&)’: user.cpp:80:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < P.size(); ++i) { ^ user.cpp: In function ‘int main()’: user.cpp:133:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("infasuratoare.in", "r", stdin); ^ user.cpp:134:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("infasuratoare.out", "w", stdout); ^