static void doWork()
{
int teri = 0;
Console.WriteLine(teri);
Pass.Value(teri);
Console.WriteLine(teri);
teri = Pass.SetTeri();
Console.WriteLine(teri);
Console.WriteLine("---------");
int i = 0;
Console.WriteLine($"i is {i}");
Pass.Value2(ref i);
Console.WriteLine(i);
Console.WriteLine("---------");
WrappedInt wi = new WrappedInt();
Console.WriteLine(wi.Number);
Pass.Reference(wi);
Console.WriteLine(wi.Number);
Console.WriteLine(wi.IdontKnow);
Pass.Reference2(wi);
Console.WriteLine(wi.IdontKnow);
Console.WriteLine(wi.isTrue);
Pass.Reference3(wi);
Console.WriteLine(wi.isTrue);
Console.ReadKey();
Duck daffy = new Duck();
Console.WriteLine($"daffy's name is [{daffy.Name}]");
daffy.Name = "Daffy";
Console.WriteLine($"daffy's name is now [{daffy.Name}]");
Console.ReadKey();
}