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Page 1
unsigned char data = 0xA5;
data = data & 0xF0; (Points : 6)
0xA0
0xF0
0xF5
0x5A
Question 2. 2. (TCO 2) If firstName and lastName are string object variables, which statement can be used to combine (append or concatenate) the two into a single string variable? (Points : 6)
fullName = firstName + lastName;
fullName = firstName, lastName;
fullName = firstName & lastName;
fullName = firstName & lastName;
Question 3. 3. (TCO 2) For a switch statement, which of the following case statement expressions is invalid or logically incorrect? (Points : 6)
case 1 < x < 100;
case 'B'|'b';
case a23.45
All of the above
Question 4. 4. (TCO 2) What output does the following code produce?
cout < fixed < setprecision(3);
double pi = 3.14159;
cout < pi < endl; (Points : 6)
3.14159
3.142
3.14
none of the above
Question 5. 5. (TCO 2) What is the value of i after the following code fragment executes?
int i = 2;
intk = 5;
i *= k + 1; (Points : 6)
7
11
12
14
Question 6. 6. (TCO 2) What is the data type of bullpen[3].era?
struct pitcher
{
string name;
double era;
};
pitcher p1;
pitcher bullpen[10]; (Points : 6)
string
double
pitcher
const pointer to pitcher
Question 7. 7. (TCO 2) Given the following code fragment, what is the data type of roster[9] .name?
struct student
{
string name;
double gpa;
};
student thisStudent;
student roster[50]; (Points : 6)
string
const pointer to student
student
double
Question 8. 8. (TCO 2) Given the following code fragment, what is the data type of thisStudent?
struct student
{
string name;
double gpa;
};
student thisStudent; (Points : 6)
string
const pointer to student
student
double
Question 9. 9. (TCO 2) Which of the following statements calls the following function correctly?
int MultiplyValues (int, int); (Points : 6)
int a = MultiplyValues (int x, int y);
int a = MultiplyValues (10, 20);
double d = MultiplyValues (int 10, int 20);
All of the above
Question 10. 10. (TCO 2) What is the output of the following code?
void func(int x[ ])
{
x[0] = x[0] * 3;
x[1] = x[1] * 3;
x[2] = x[2] * 3;
}
int main ()
{
int x[ ] = {1, 2, 3};
func(x);
cout < x[0] < " " < x[1] < " " < x[2] < endl;
} (Points : 6)
1 2 3
3 4 5
3 6 9
3 3 3
Question 11. 11. (TCO 2) Which of the following function definitions uses pass-by-values? (Points : 6)
int myFunc( int * x, int * y );
int myFunc( int x, int y );
int myFunc( int & x, int & y );
int myFunc( int @value1, int @value2 );
Page 2
none
1
2
no limit
Question 2. 2. (TCO 2) What is the name of a member function of a class that only accesses the value(s) of member variable(s) and does not modify the value(s)? (Points : 6)
Set
Private
Member
Accessor
Question 3. 3. (TCO 2) Which of the following is a valid declaration to overload the following function?
int whatever (double x); (Points : 6)
double whatever (double x);
int whatever (int x);
int whatever2 (double x);
int overload (double x);
Question 4. 4. (TCO 2) Variables defined to be of a user-declared class are referred to as: (Points : 6)
attributes
member variables
primitive variables
objects
Question 5. 5. (TCO 2) When organizing a program into three files (main, class implementation, and class header), which is not a .cpp file? (Points : 6)
main
none are .cpp
class header
class implementation
Question 6. 6. (TCO 2) What is the data type of pDist for the code snippet below?
Distance * pDIST; (Points : 6)
Distance
Const pointer to Distance
Pointer to Distance
None of the above
Question 7. 7. (TCO 2) What is the output of the following code snippet?
int value = 10;
int * iptr = &value;
*iptr = 5;
Cout < *iptr < “ “ < value; (Points : 6)
5 5
10 10
5 10
10 5
Question 8. 8. (TCO 2) What is wrong with the following C++ statements?
int * iptr;
double d = 123.321;
iptr = &d;
cout < *iptr; (Points : 6)
The cout statement does not contain an endl.
The space following the ampersand should not be there.
The iptr variable cannot be given an address of a double.
All of the above
Question 9. 9. (TCO 2) What does the following Java code do?
JPanel pane = new JPanel( );
pane.setLayout( new gridLayout(2, 3) ); (Points : 6)
Creates a panel which will organize its components into 5 distinct cells.
Creates a panel which displays a grid containing the numbers 2 and 3.
Creates a panel which will organize its components into two rows of three columns.
None of the above.
Question 10. 10. (TCO 2) Which of the following is an example of the invocation of a static method in Java? (Points : 6)
Integer.parseInt(someString);
Math.pow(2, 3);
String.format(“This is an output string”);
All of the above
Question 11. 11. (TCO 2) Which Java interface would you need to implement in order to handle events such as key pressed or key released events? (Points : 6)
KeyListener interface
KeyStroke interface
KeyEvent interface
This information is not available in a Java program
Question 12. 12. (TCO 2) What can you say about the following Java class?
Public class MyApp extends JFrame ( …) (Points : 6)
MyApp is a Java application.
MyApp implements the JFrame interface.
MyApp inherits from the JFrame class.
MyApp has a nested inner class called JFrame.
Question 13. 13. (TCO 2) The Graphics class in Java provides methods to: (Points : 6)
draw lines between any two points
draw test strings starting at any point
draw shapes such as rectangles, ovals, etc.
All of the above
Question 14. 14. (TCO 2) The x, y drawing coordinate system used in Java graphics (Points : 6)
uses character units.
has the origin in the upper left corner of the display area.
uses the x coordinate for the vertical axis.
All of the above
#2
Page 1
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„„
!
Question 2. 2. (TCO 2) What is wrong with the following switch statement?
switch(x)
{
case 0:
cout < x;
case 2:
cout < 2/ x;
break;
default:
cout < “error”;
break;
} (Points : 6)
The value of x could be something other than 1 or 2.
There is no break statement for case 1.
There is no semicolon after the closing bracket.
All of the above
Question 3. 3. (TCO 2) Why does this code snippet give a compile error?
int loopCounter = 0;
numberOfScores = 20;
while (loopcounter < numberOfScores)
cout < “\nInside the loop”; (Points : 6)
The value of the control loop control variable does not change the loop body.
The curly brackets are missing around the loop body.
The loopCounter variable is not spelled consistently.
All of the above
Question 4. 4. (TCO 2) Which operation in the following expression will be performed first?
c = a++ / b + 5; (Points : 6)
a++.
a/b
assignment to c
b + 5
Question 5. 5. (TCO 2) Which looping statement is best if the number of iterations is known? (Points : 6)
if/else
for
while
do/while
Question 6. 6. (TCO 2) Given the following code fragment, what is the data type of roster[9] .name?
struct student
{
string name;
double gpa;
};
student thisStudent;
student roster[50]; (Points : 6)
string
const pointer to student
student
double
Question 7. 7. (TCO 2) Which type of error does the following code fragment cause?
const int MAX = 500;
int main (void)
{
int foo [MAX];
for (int i = 0; i <= MAX; i++)
{
foo [i] = i * 2;
} (Points : 6)
Compiler, due to out-of-bounds array subscript.
Run-time, due to out-of-bounds array subscript.
Compiler, due to invalid array initialization.
None of the above. It does not create any type of error.
Question 8. 8. (TCO 2) How many elements does the following array contain?
double data [100] [500]; (Points : 6)
500
100
600
50,000
Question 9. 9. (TCO 2) Which of the following functions is taking an array of MyStruct structures as a pass-by-value parameter? (Points : 6)
void MyFunc( MyStruct data[ ] );
void MyFunc( MyStruct &data[ ] );
void MyFunc( MyStruct *data[ ] );
not allowed in C++
Question 10. 10. (TCO 2) What is the output of the following code?
void func(int x)
{
x = x * 2;
}
int main( )
{
int x = 10;
func(x);
cout < x < endl;
} (Points : 6)
20
30
10
5
Question 11. 11. (TCO 2) What is the output of the following code?
void func(int *x)
{
*x = *x * 3;
};
int main()
{
int x = 10;
func (&x);
cout < x < endl;
} (Points : 6)
20
30
10
5
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Page 2
int whatever (double x); (Points : 6)
double whatever (double x);
int whatever (int x);
int whatever2 (double x);
int overload (double x);
Question 2. 2. (TCO 2) The word const inside the parentheses of the following declaration of isEqual bool isEqual (const Distance & rightSideObject) const; (Points : 6)
ensures the member variables of the called objects are protected (cannot be changed)
ensures the argument passed in to the function is protected (cannot be changed)
ensures the return value of the function is protected (cannot be changed)
ensures the return value is routed to the proper variable
Question 3. 3. (TCO 2) How many parameters are required to overload the pre-increment operator for a class as a member function? (Points : 6)
none
1
2
no limit
Question 4. 4. (TCO 2) Which of the following is called automatically each time an object is created? (Points : 6)
Compiler
Builder
Constructor
Destructor
Question 5. 5. (TCO 2) Given the following class definition and lines of code, Line 1 in main is a call to what?
class Distance
{
private:
int feet;
double inches;
public:
Distance( );
Distance(int initFt, double initIn);
void setFeet(int feetIn);
void setInches(double inchesIn);
int getFeet() const;
double getInches( ) const;
};
int main( )
{
Distance d1; //Line 1
const int MAX = 100; //Line 2
Distance list[MAX]; //Line 3
Distance d2(1, 2.3); //Line 4
Distance * pDist; //Line 5
d1.feet = 5; //Line 6
// etc. – assume the remaining code is correct
} (Points : 6)
The 0-argument Distance constructor
The 2-argument, int, double, Distance constructor
The 2-argument, double, int, Distance constructor
The 1-argument, int, Distance constructor
Question 6. 6. (TCO 2) What is the data type of pDist for the code snippet below?
Distance * pDIST; (Points : 6)
Distance
Const pointer to Distance
Pointer to Distance
None of the above
Question 7. 7. (TCO 2) Given the definition of some class called Employee, which of the following correctly dynamically allocates an array of 20 Employee objects? (Points : 6)
Employee * myData = new Employee[20];
Employee myData[20] = new Employee[20];
Employee = myData[20];
Employee array = new Employee[20];
Question 8. 8. (TCO 2) What is the output of the following code snippet?
int value = 10;
int * iptr = &value;
*iptr = 5;
Cout < *iptr < “ “ < value; (Points : 6)
5 5
10 10
5 10
10 5
Question 9. 9. (TCO 2) Which of the following Java statements creates an object of a ButtonHandler class (which implements the ItemListener interface) and associates it with a JRadioButton object called buttonOne? (Points : 6)
buttonOne.addItemListener(ButtonHandler( ));
buttonOne.addItemListener(new ButtonHandler());
buttonOne.+= new ButtonHandler( );
buttonOne.addEventHandlerr(new ButtonHandler( ));
Question 10. 10. (TCO 2) Which of the following creates a class that properly handles ActionEvents? (Points : 6)
class handler implements ActionListener
{public void actionPerformed(ActionEvent e){//code for event handler} }
class handler extends ActionListener
{public void handleEvent(ActionEvent e){//code for event handler} }
class handler implements ActionListener
{public void ActionListener(ButtonEvent e){//code for event handler} }
class handler implements ActionListener
{public void actionPerformed(ActionListener e){//code for event handler} }
Question 11. 11. (TCO 2) The x, y drawing coordinate system used in Java graphics (Points : 6)
uses character units.
has the origin in the upper left corner of the display area.
uses the x coordinate for the vertical axis.
All of the above
Question 12. 12. (TCO 2) In order to guarantee that only one JRadioButton is selected at any time: (Points : 6)
add each JRadioButton object to a different panel
create a ButtonGroup object and add the JRadioBttons to it
have a JCheckBox object manage the three JRadioButtons
This cannot be done in Java.
Question 13. 13. (TCO 2) What can you say about the following Java class?
Public class MyApp extends JFrame ( …) (Points : 6)
MyApp is a Java application.