Eroare de compilare: user.cpp: In function ‘bool inside_Polygon(Point&, Polygon&)’: user.cpp:38:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < P.size(); i++) ^ user.cpp:37:15: warning: variable ‘eq’ set but not used [-Wunused-but-set-variable] bool sm=0,eq=0,bg=0; ^ user.cpp: In function ‘void buildPolygon(Polygon&)’: user.cpp:86:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < P.size(); i++) ^ user.cpp: In function ‘double PolygonArea(Polygon&)’: user.cpp:104:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < P.size(); i++) ^ In file included from /usr/include/c++/4.8/algorithm:62:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64, from user.cpp:1: /usr/include/c++/4.8/bits/stl_algo.h: In instantiation of ‘_RandomAccessIterator std::__unguarded_partition(_RandomAccessIterator, _RandomAccessIterator, const _Tp&, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Point*, std::vector<Point> >; _Tp = Point; _Compare = buildPolygon(Polygon&)::__lambda4]’: /usr/include/c++/4.8/bits/stl_algo.h:2319:78: required from ‘_RandomAccessIterator std::__unguarded_partition_pivot(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Point*, std::vector<Point> >; _Compare = buildPolygon(Polygon&)::__lambda4]’ /usr/include/c++/4.8/bits/stl_algo.h:2360:62: required from ‘void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Point*, std::vector<Point> >; _Size = int; _Compare = buildPolygon(Polygon&)::__lambda4]’ /usr/include/c++/4.8/bits/stl_algo.h:5513:44: required from ‘void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = __gnu_cxx::__normal_iterator<Point*, std::vector<Point> >; _Compare = buildPolygon(Polygon&)::__lambda4]’ user.cpp:94:10: required from here /usr/include/c++/4.8/bits/stl_algo.h:2287:35: error: no match for call to ‘(buildPolygon(Polygon&)::__lambda4) (Point&, const Point&)’ while (__comp(*__first, __pivot)) ^ user.cpp:91:13: note: candidate is: [&P](Point &A,Point &B) -> bool { ^ In file included from /usr/include/c++/4.8/cstdbool:39:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:56, from user.cpp:1: user.cpp:91:37: note: buildPolygon(Polygon&)::__lambda4 [&P](Point &A,Point &B) -> bool { ^ user.cpp:91:37: note: no known conversion for argument 2 from ‘const Point’ to ‘Point&’ In file included from /usr/include/c++/4.8/algorithm:62:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64, from user.cpp:1: /usr/include/c++/4.8/bits/stl_algo.h:2290:34: error: no match for call to ‘(buildPolygon(Polygon&)::__lambda4) (const Point&, Point&)’ while (__comp(__pivot, *__last)) ^ user.cpp:91:13: note: candidate is: [&P](Point &A,Point &B) -> bool { ^ In file included from /usr/include/c++/4.8/cstdbool:39:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:56, from user.cpp:1: user.cpp:91:37: note: buildPolygon(Polygon&)::__lambda4 [&P](Point &A,Point &B) -> bool {