Lab 09: Hint peekTop()

The stub of peekTop() should look like this:

Item Stack::peekTop() const {
}

The variable mySize always contains the number of items in the Stack:

• when the stack is empty, mySize == 0;
• when the stack contains 1 item, mySize == 1 and the top item is at index 0;
• when the stack contains two items, mySize == 2 and the top item is at index 1;
• when the stack contains three items, mySize == 3 and the top item is at index 2;
• etc.

More generally, when the stack is not empty, the top item is 1 position “down” from the value of mySize.

So when the stack is not empty, peekTop() should return the item from myArray that is 1 less than the current value of mySize.