/// <summary>
/// <param name="d"> Cat/Dog Number </param>
/// <param name="c"> Type - Cat or Dog </param>
/// </summary>
public void enqueue(object d, CatDogType c)
{
CatDog cd = new CatDog((int)d, c);
queue.Insert(cd);
}
/// <summary>
/// Constructor for initializing CatDog with its type and number
/// </summary>
public CatDog(int n, CatDogType t)
{
num = n;
type = t;
}