Question regarding C++

Hello, people

Sorry to steer a little off-topic here but I thought of no better place for starting this discussion.

I came across this piece of code when browsing rhino c++ examples:

ON_3dPoint center_point( 0.0, 0.0, 0.0 );   
double radius = 5.0;   

ON_3dPoint height_point( 0.0, 0.0, 10.0 );   

ON_3dVector zaxis = height_point - center_point;   

ON_Plane plane( center_point, zaxis );   

ON_Circle circle( plane, radius );   

ON_Cylinder cylinder( circle, zaxis.Length() );   

THIS LINE -------->   ON_Brep* brep = ON_BrepCylinder( cylinder, TRUE, TRUE );   



if( brep )   {     CRhinoBrepObject* cylinder_object = new CRhinoBrepObject();     

cylinder_object->SetBrep( brep );     



if( context.m_doc.AddObject(cylinder_object) )      

      context.m_doc.Redraw();     



else       

      delete cylinder_object;





In the marked line, we are creating a pointer, but what does it point to? As far as I can understand a pointer

is only an integer address so it cannot be assigned to a structure such as ON_BrepCylinder. Shouldn't  it be:



ON_Brep* brep = &cylinder;



It would be great if any of our C++ gurus could shine some light on this.