public static AnimalManager getInstance()
{
if (instance == null)
{
instance = new AnimalManager();
}
return(instance);
}
static void Main(string[] args)
{
Console.WriteLine("Hello World!");
//test singleton
AnimalManager.getInstance();
Stack stack = new Stack()
{
Numbers = new List <int> {
1, 7, 8, 9
}
};
Console.WriteLine($"numbers at 2 = {stack[2]}");
}
