Compilare: user.cpp: In function ‘double get_area(std::vector<Point>, Point)’: user.cpp:31:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i + 1 < polygon.size(); i++ ){ ^ user.cpp: In function ‘Point get_splitPoint(std::vector<Point>, Point)’: user.cpp:41:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < polygon.size(); i++ ){ ^ user.cpp:49:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i + 1 < polygon.size(); i++ ){ ^ user.cpp:57:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( L == polygon.size() ) ^ user.cpp:60:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( R == polygon.size() ) ^ user.cpp:67:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( L == polygon.size() ) ^ user.cpp:69:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( R == polygon.size() ) ^ user.cpp: In function ‘int main()’: user.cpp:108:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( i == v.size() ) ^ user.cpp:112:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( i == v.size() ) ^ user.cpp:120:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( i == v.size() ) ^ user.cpp:124:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( i == v.size() ) ^