6.1.1.1 Exercise ADT | COMP.CS.140 Ohjelmointi 3: Rajapinnat ja tekniikat

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Question 1 1 point

Abstract base class

does not contain any implementation

is meant to be used only as a base class meaning it cannot be instantiated

works both as a base class and as a concrete class

Question 2 2 points

A class is defined as an abstract base class

where some of the services it implements are specialized by the subclass

which has at least one abstract member function in its interface

which has several sub classes

Question 3 2 points

In the class hierarchy an abstract base class groups

concrete classes together based on common behaviour

concrete classes together based on common implementation

concrete classes together based on both common behaviour and common implementation

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