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homework3 - Homework 3 CSC 4101 Fall 2011 Due 25 October...

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Homework 3 CSC 4101, Fall 2011 Due: 25 October 2011 1. (10 pts) Suppose we had support for multimethods in Java instead of or in addition to overloading. Explain how you would implement the pretty printer of Project 1 using multimethods instead of having a print() method in each class of the hierarchy. What would be the advantage of using multimeth- ods? You can simply use the same syntax as for overloading and indicate where the multimethod dispatch happens. 2. (10 pts) Suppose we have the following class: class C { / * ... * / public: int foo (); int bar (); }; Also suppose that this class is only available in compiled form, i.e., that it cannot be modified. Now we want to add an alternative implentation that only has a method foo() but that does not have a method bar() and does not inherit the data members from class C . I.e., this new class D would have the structure class D / * ... * / { public: int foo (); }; but it cannot inherit from class C . Suppose we want to maintain a list of objects that can be from either classes C or D . Explain how
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