Eroare de compilare: user.cpp:166:2: warning: no newline at end of file user.cpp: In member function 'double Point::angleOX()': user.cpp:73: error: call of overloaded 'abs(double)' is ambiguous /usr/include/stdlib.h:691: note: candidates are: int abs(int) /usr/include/c++/4.2/cstdlib:174: note: long long int __gnu_cxx::abs(long long int) /usr/include/c++/4.2/cstdlib:143: note: long int std::abs(long int) user.cpp: In member function 'std::vector<Point, std::allocator<Point> > ConvexHull::getConvexHull()': user.cpp:124: warning: comparison between signed and unsigned integer expressions