Running the Calculator

dublin$ TestCalculator : 1 2 + 3 : 1 2 3 * + 7 : 1 2 3 4 5 + + + + stack failure dublin$ TestCalculator : 1 1 : 1 2 invalid expression dublin$ TestCalculator : + invalid expression dublin$ TestCalculator : x syntax error dublin$

Note that the implementation of ArrayedStack supports four elements only.

``1 2'' is invalid as the stack is not left in an empty stack after taking the top-most element of it.

``+'' is invalid as there are no operands supplied.

	Note that the implementation of `ArrayedStack` supports four elements only.
	``1 2'' is invalid as the stack is not left in an empty stack after taking the top-most element of it.
	``+'' is invalid as there are no operands supplied.