Question 1

The components of a class are called the ____ of the class.

Accepted Answer

A)  elements 
B)  members 
C)  objects 
D)  properties

Question 2

A(n)____________________ is a statement specifying the condition(s)that must be true before the function is called.

Accepted Answer

The answer of A(n)____________________ is a statement specifying the condition(s)that...

Question 3

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

Accepted Answer

The answer of To create the object code file for...

Question 4

You can use arithmetic operators to perform arithmetic operations on class objects.

Accepted Answer

A) True 
 B)False

Question 5

A ____ sign in front of a member name on a UML diagram indicates that this member is a public member.

Accepted Answer

A)  + 
B)  - 
C)  # 
D)  $

Question 6

If the heading of a member function of a class ends with the word const,then the function member cannot modify the private member variables,but it can modify the public member variables.

Accepted Answer

A) True 
 B)False

Question 7

Figure 2:
class rectangleType
{
public:
$\quad$void setLengthWidth(double x, double y);
$\quad$$\quad$//Postcondition: length = x; width = y;
$\quad$void print() const;
$\quad$$\quad$//Output length and width;
$\quad$double area();
$\quad$$\quad$//Calculate and return the area of the rectangle;
$\quad$double perimeter();
$\quad$$\quad$//Calculate and return the parameter;
$\quad$$\quad$rectangleType();
$\quad$$\quad$//Postcondition: length = 0; width = 0;
$\quad$rectangleType(double x, double y);
$\quad$$\quad$//Postcondition: length = x; width = y;
private:
$\quad$double length;
$\quad$double width;
};
-Consider the accompanying class definition,and the object declaration: rectangleType bigRect(14,10);
Which of the following statements is correct?

Accepted Answer

A)  bigRect.setLengthWidth(); 
B)  bigRect.setLengthWidth(3.0, 2.0); 
C)  bigRect.length = 2.0; 
D)  bigRect.length = bigRect.width;

Question 8

-Consider the accompanying class and member functions definitions in Figure 3.How many constructors are present in the class definition above?

Accepted Answer

A)  none 
B)  one 
C)  two 
D)  three

Question 9

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

Accepted Answer

A)  accessors 
B)  mutators 
C)  constructors 
D)  destructor

Question 10

Figure 1:
 
-The word ____ at the end of the member functions in the accompanying class clockType in Figure 1 specifies that these functions cannot modify the member variables of a clockType object.

Accepted Answer

A)  static 
B)  const 
C)  automatic 
D)  private

Exam 10: Classes and Data Abstraction