Bubble Sort with Arrays

What I have to do is create a fxn called bubbleSort and a helper fxn called swap. bubbleSort takes two parameters, an array of doubles and a size, and puts the list in descending order. Swap takes two reference parameters. Here is what I have so far what seems to be wrong? I know they want the swap as a reference but I thought arrays coudnt be referenced...

Code:

void swap(double array[], double array1[])
{

  double hold;
  double index;

  hold=array[index];
  array[index]=array[index+1];
  array[index+1]=hold;
}







void bubbleSort(double array[], int count)
{

  for(int index = 0; index < count -1; index++)
    {
      if (array[index]<array[index+1])
		swap(array[index],array[index+1]);

    }
}

alpha has a good tip