Function parameters

[jshm415]

Hi, I am working on implementing this piece of code right now and I don't understand why I am having errors on line 12 and 14.

It says that both length and arr are undefined, but I thought they included them in my stable_sort function's parameters.

How can I fix this

 #include <iostream>
using namespace std;

int bubble_sort (int arr[], int length)
{
	// Implment Bubble Sort
}

int stable_sort (int (*fptr)(int arr[], int length))
{
	
	for(int i = 0; i < length; i++)
	{
		if (arr[i] == arr[i+1])
		{
			/*if (key[i] < key[i+1] )
				return;*/
		}
	}

	// Check if bubble sort is stable.
}

int main()
{
	int arr[]={1,2,4,3,6,5};
	int (*pfnc)(int [], int length);
	pfnc = bubble_sort;
	stable_sort(pfnc);
return 0;
}

[JockX]

They are not stable_sort function parameters. They are parameters of the function passed to stable_sort() as function pointer. Why not just:
int stable_sort (int arr[], int length){ ... } ?