var a = 1;

var b = a;

a=2;

println(@H_403_21@"\@H_403_21@(a@H_403_21@),\@H_403_21@(b@H_403_21@)");//2,1

struct cs{

var v:Int = 99;

}

var i = cs();

var j = i;

i.v = 98;

println(@H_403_21@"\@H_403_21@(i.v@H_403_21@),\@H_403_21@(j.v@H_403_21@)");//98,99

class ca{

var v:Int;

init(var a:ca){//拷贝构造实现传值

self.v = a.v;

}

init(){

v = 100;

}

}

var x = ca();

var y = x;

var z = ca(a: x);

x.v = 200;

println(@H_403_21@"\@H_403_21@(x.v@H_403_21@),\@H_403_21@(y.v@H_403_21@),\@H_403_21@(z.v@H_403_21@)");//200,200,100

//Int、struct是copy，class是引用