Compilare: user.cpp: In constructor ‘Line::Line(Point, Point)’: user.cpp:37:17: warning: ‘Line::pas’ will be initialized after [-Wreorder] Point a, b, pas; ^ user.cpp:37:14: warning: ‘Point Line::b’ [-Wreorder] Point a, b, pas; ^ user.cpp:38:5: warning: when initialized here [-Wreorder] Line(Point a, Point b) : a(a), pas(b), b(a + b) { } ^ user.cpp: In function ‘double proc(Circle)’: user.cpp:95:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i(0); i < lines.size(); i++) { ^