Question

In the following code, function x is a function defined to:

         def x (glassStack):
                   if isEmpty (glassStack):
                         print ('underflow')
                         return None
               else:
                        return (glassStack.pop ())

Options

• Delete the topmost element if stack is not empty

• Prevent underflow condition

• Check if the stack is empty

• All of the above

Answer 1

All of the above

Explanation:

All of the options given are implemented by the function.