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8. Define the following terms associated with object-oriented design: |
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problem domain |
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solution domain |
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implementation-level object |
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9. Mark each of the following statements as True or False. |
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a. Every noun and noun phrase in a problem definition becomes an object in the solution domain. |
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b. For a given problem, there are usually more objects in the solution domain than in the problem domain. |
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c. In the three-step process for performing object-oriented design, all decisions made during each step are final. |
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10. For each of the following design methodologies, at what general time (beginning, middle, end) is the driverthe top-level algorithmdesigned? |
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a. Object-oriented design |
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b. Structured (top-down) design |
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11. Fill in each blank below with either is-a or has-a. |
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In general, the best strategy in object-oriented design is to use inheritance for ______ relationships and composition for ______ relationships. |
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Programing Warm-Up Exercises |
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1. For the Line class of Quick Check Question 7, implement the StartingPoint and EndingPoint member functions. |
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2. For the Line class of Quick Check Question 7, implement the Length member function. Hint: The distance between two points (x1, y1) and (x2, y2) is |
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3. The following class represents a person's mailing address in the United States. |
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typedef char String20[21];
class Address
{
public:
void Write() const;
Address( /* in */ const String20 newStreet,
/* in */ const String20 newCity,
/* in */ const String20 newState,
/* in */ const String20 newZip );
private:
String20 street;
String20 city;
String20 state;
String20 zipCode;
}; |
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Using inheritance, we want to derive an international address class, InterAddress, from the Address class. For this exercise, an international address has all the attributes of a U.S. address plus a country code (a string indicat- |
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