Solve the following problem (i. e. the first attribute grammar may accept what the second attribute grammar rejects and vice versa): Augment this grammar with attributes, attribute computation functions, and predicates to reject WAE expressions which contain WITH sub-expressions with duplicate variable names in their alist. For example, the following WAE expression should be rejected:

{ +20 { with { x 2} {y 4} {x 5}} {+ x y}}}

What is the most important aspect of marking media? a. data labelingb. content descriptionc. electronic labelingd. classification

Pp 4.1 design and implement a class called sphere that contains instance data that represents the sphere’s diameter. define the sphere constructor to accept and initialize the diameter and include getter and setter methods for the diameter. include methods that calculate and return the volume and surface area of the sphere (see pp 3.5 for the formulas). include a tostring method that returns a one-line description of the sphere. create a driver class called multisphere, whose main method instantiates and updates several sphere objects.

Respond to the following in three to five sentences. select the workplace skill, habit, or attitude described in this chapter that you believe is most important for being a successful employee.