importCocoa

structpoint{

varx=0;

vary=init(x:Int,y:Int){

self.x= x;

y= y;

}

varscale:Int{

get{

returnx/x; }

set{

x*=newValue;

y*=newValue;

}

}

}

varpt =point(x:1,y:3);

varv1 =pt.scale;

pt.scale=2;

varv2 =pt.scale;