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Exam 10: Classes and Data Abstraction

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Question 21

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A program or software that uses and manipulates the objects of a class is called a(n) ____________________ of that class.

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Question 22

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A(n) ____________________ contains the definitions of the functions to implement the operations of an object.

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Question 23

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Which of the following class definitions is correct in C++?

In C++ terminology, a class object is the same as a class instance.

In C++, the ____ is an operator called the member access operator.

What does ADT stand for?

class rectangleType { public: void setLengthWidth(double x, double y) ; //Postcondition: length = x; width = y; void print() const; //Output length and width; double area() ; //Calculate and return the area of the rectangle; double perimeter() ; //Calculate and return the parameter; rectangleType() ; //Postcondition: length = 0; width = 0; rectangleType(double x, double y) ; //Postcondition: length = x; width = y; private: double length; double width; }; -Consider the accompanying class definition in Figure 2. Which of the following variable declarations is correct?

-Consider the UML class diagram shown in the accompanying figure. Which of the following is the name of the class?

class rectangleType { public: void setLengthWidth(double x, double y) ; //Postcondition: length = x; width = y; void print() const; //Output length and width; double area() ; //Calculate and return the area of the rectangle; double perimeter() ; //Calculate and return the parameter; rectangleType() ; //Postcondition: length = 0; width = 0; rectangleType(double x, double y) ; //Postcondition: length = x; width = y; private: double length; double width; }; -Consider the accompanying class definition, and the declaration: rectangleType bigRect; Which of the following statements is correct?

A C++ implementation file has the extension ____________________.

To create the object code file for any source code file, the command line option ____________________ is used on the system command line.

A constructor with no parameters is called the ____________________ constructor.

A class object can be ____. That is, it can be created once, when the control reaches its declaration, and destroyed when the program terminates.

Classes were specifically designed in C++ to handle ____________________.

A(n) ____________________ function of a class changes the values of the member variable(s) of the class.

The header file is also known as the ____________________.

To guarantee that the member variables of a class are initialized, you use ____.

-Consider the UML class diagram shown in the accompanying figure. According to the UML class diagram, how many private members are in the class?

A class and its members can be described graphically using a notation known as the ____ notation.

If an object is created in a user program, then the object can access both the public and private members of the class.