Revise the program in Listing 4-4 so that it tests first the link-based implementationand then the array-based implementation. Ensure that the program does not have amemory leak.

What will be an ideal response?

```
int main()
{
BagInterface* bagPtr = new LinkedBag();
std::cout << "Testing the Link-Based Bag:" < std::cout << "The initial bag is empty." < bagTester(bagPtr);
delete bagPtr;
std::cout < bagPtr = new ArrayBag();
std::cout << "Testing the Array-Based Bag:" < std::cout << "The initial bag is empty." < bagTester(bagPtr);
delete bagPtr;
bagPtr = nullptr;
std::cout << "All done!" << std::endl;
return 0;
} // end main

```