ho copiato il codice per provarlo ma da questo errore:



StudioC.obj : error LNK2001: unresolved external symbol "class ostream & __cdecl operator<<(class ostream &,class Circle const &)" (??6@YAAAVostream@@AAV0@ABVCircle@@@Z)
StudioC.obj : error LNK2001: unresolved external symbol "class ostream & __cdecl operator<<(class ostream &,class Point const &)" (??6@YAAAVostream@@AAV0@ABVPoint@@@Z)
StudioC.obj : error LNK2001: unresolved external symbol "public: void __thiscall Point::setPoint(int,int)" (?setPoint@Point@@QAEXHH@Z)
StudioC.obj : error LNK2001: unresolved external symbol "public: void __thiscall Circle::setRadius(double)" (?setRadius@Circle@@QAEXN@Z)
Debug/StudioC.exe : fatal error LNK1120: 4 unresolved externals
Error executing link.exe.