•Software Reusability-- Inheritance allows you to modify or extend a package somebody gave you without touching the package's code
–Saves programmer time:
–increase reliability, decrease maintenance cost, and,
–if code sharing occurs, smaller programs.
•Consistency of Interface--An overridden function must have the same parameters and return type:
–Saves user time: Easier learning, and easier integration.
–guarantee that interface to similar objects is in fact similar.
•Polymorphism-- Different objects behave differently as a response to the same message.
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–Saves programmer time:
–increase reliability, decrease maintenance cost, and,
–if code sharing occurs, smaller programs.
•Consistency of Interface--An overridden function must have the same parameters and return type:
–Saves user time: Easier learning, and easier integration.
–guarantee that interface to similar objects is in fact similar.
•Polymorphism-- Different objects behave differently as a response to the same message.
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