static void Main(string[] args)
{
Ctime t1 = new Ctime();
Ctime t2 = new Ctime(12, 12, 12);
Ctime t3 = new Ctime(t2);
t3.xuat();
Console.ReadKey();
}
public Ctime(Ctime t) // Constructor sao chep
{
h = t.h;
m = t.m;
s = t.s;
}