Task: I need to write an external library in C. A list with the name of the array comes to the object's inlet. How to get a pointer to this array inside an external library in C language?

Help me please! I need to implement the following code written in C # in the patch:

public static void FareiSequence(int n)
 {
   Console.WriteLine("{0} / {1}", 0, 1);
   FareiSequence(n, 0, 1, 1, 1);
   Console.WriteLine("{0} / {1}", 1, 1);
 }

private static void FareiSequence(int n, int x, int y, int z, int t)
{
  int a = x + z, b = y + t;
   if (b <= n)
    {
      FareiSequence(n, x, y, a, b);
      Console.WriteLine("{0} / {1}", a, b);
      FareiSequence(n, a, b, z, t);
    }
}

How to organize recursion in a patch?