Allow the capacity of a warren to vary, some warrens may be smaller and other may be larger

Within the warren class, a variable called MaxRabbitsInWarren is set to 99. The const declaration means it can't be changed during runtime. You must therefore remove the const:

private const int MaxRabbitsInWarren = 99;

Becomes:

private int MaxRabbitsInWarren = 99;

Warren Constructors

Both of the constructors below are used to create a warren. We need to add some code to both to set the size of the warren randomly.

public Warren(int Variability)
    {
      this.Variability = Variability;
      Rabbits = new Rabbit[MaxRabbitsInWarren];
      RabbitCount = (int)(CalculateRandomValue((int)(MaxRabbitsInWarren / 4), this.Variability));
      for (int r = 0; r < RabbitCount; r++)
      {
        Rabbits[r] = new Rabbit(Variability);
      }
    }

public Warren(int Variability, int rabbitCount)
    {
      this.Variability = Variability;
      this.RabbitCount = rabbitCount;
      Rabbits = new Rabbit[MaxRabbitsInWarren];
      for (int r = 0; r < RabbitCount; r++)
      {
        Rabbits[r] = new Rabbit(Variability);
      }
    }

We could therefore use the CalculateRandomValue() method to also create a random value for MaxRabbitsInWarren:

MaxRabbitsInWarren = (int)CalculateRandomValue(MaxRabbitsInWarren, Variability);

CalculateRandomValue will return a double, but we need to have an integer. Using (int) will cast the double into an integer instead.

You should now have this:

public Warren(int Variability)
    {
      this.Variability = Variability;
      MaxRabbitsInWarren = (int)CalculateRandomValue(MaxRabbitsInWarren, Variability);
      Rabbits = new Rabbit[MaxRabbitsInWarren];
      RabbitCount = (int)(CalculateRandomValue((int)(MaxRabbitsInWarren / 4), this.Variability));
      for (int r = 0; r < RabbitCount; r++)
      {
        Rabbits[r] = new Rabbit(Variability);
      }
    }

public Warren(int Variability, int rabbitCount)
    {
      this.Variability = Variability;
      MaxRabbitsInWarren = (int)CalculateRandomValue(MaxRabbitsInWarren, Variability);
      this.RabbitCount = rabbitCount;
      Rabbits = new Rabbit[MaxRabbitsInWarren];
      for (int r = 0; r < RabbitCount; r++)
      {
        Rabbits[r] = new Rabbit(Variability);
      }
    }

Display Warren Size

You now need to edit the Inpsect method of the Warren class, this now needs to give a message to report the maximum number of rabbits allowed in the warren. This is the original:

    public virtual void Inspect()
    {
        Console.WriteLine("Periods Run " + PeriodsRun + " Size " + RabbitCount);
    }

With the extra code added:

    public virtual void Inspect()
    {
        Console.WriteLine("Max Warren Size: " + MaxRabbitsInWarren);
        Console.WriteLine("Periods Run " + PeriodsRun + " Size " + RabbitCount);
    }

Run simulation with option 2

After testing this it will only work with option 2 from the initial menu, ie to run with custom settings. This is because option one has a specific number of rabbits for each warren, and to retain these values Variability is set to 0. So in the constructor which accepts 2 parameters you could give a specific value for Variability in the CalculateRandomValue method instead:

        public Warren(int Variability, int rabbitCount)
        {
            this.Variability = Variability;
            MaxRabbitsInWarren = (int)CalculateRandomValue(MaxRabbitsInWarren, 20);
            this.RabbitCount = rabbitCount;
            Rabbits = new Rabbit[MaxRabbitsInWarren];
            for (int r = 0; r < RabbitCount; r++)
            {
                Rabbits[r] = new Rabbit(Variability);
            }
        }