Question 1

If you place a semicolon after the test expression in a while loop, it is assumed to be a(n)

Accepted Answer

A)   pre-test loop
B)   post-test loop
C)   null statement
D)   infinite loop
E)   None of theseF) All of the above
G) C) and D)

Question 2

The __________ loop is a good choice when you know how many times you want the loop to iterate in advance of entering the loop.

Accepted Answer

A)   while
B)   for
C)   switch
D)   do-while
E)   pre-testF) C) and E)
G) C) and D)

Question 3

To allow file access in a program, you must use __________ in the header file.

Accepted Answer

A)   #include file
B)   #include fileaccess
C)   #include fstream
D)   #include cfileE) A) and B)
F) A) and C)

Question 4

A special value that marks the end of a list of values is a

Accepted Answer

A)   constant
B)   counter
C)   variable
D)   sentinel
E)   None of theseF) A) and D)
G) All of the above

Question 5

You may nest while and do-while loops but you may not nest for loops.

Accepted Answer

A) True 
 B)False

Question 6

What will the following code display?
int number = 6;
number++;
cout << number << endl;

Accepted Answer

A)   6
B)   5
C)   7
D)   0E) None of the above
F) All of the above

Question 7

How many times will the following loop display "Looping again!"?
For (int i = 0; i <= 20; i++) 
Cout << "Looping again!" << endl;

Accepted Answer

A)   20
B)   19
C)   21
D)   an infinite number of timesE) All of the above
F) A) and C)

Question 8

This means to increase a value:

Accepted Answer

A)   decrement
B)   increment
C)   modulus
D)   parse
E)   None of theseF) A) and B)
G) B) and E)

Question 9

What will the following code display?
Int x = 0;
For (int count = 0; count < 3; count++) 
X += count;
Cout << x << endl;

Accepted Answer

A)   012
B)   0
C)   6
D)   3E) A) and D)
F) A) and B)

Question 10

It is possible to define a file stream object and open a file in one statement.

Accepted Answer

A) True 
 B)False

Question 11

The two important parts of a while loop are the expression that is tested for a true or False value and

Accepted Answer

A)   a statement or block that is repeated as long as the expression is true
B)   a statement or block that is repeated only if the expression is False
C)   one line of code that is repeated once, if the expression is true
D)   a statement or block that is repeated once, if the expression is trueE) B) and D)
F) B) and C)

Question 12

A statement that causes a loop to terminate early is

Accepted Answer

A)   break
B)   terminate
C)   re-iterate
D)   continue
E)   None of theseF) B) and C)
G) B) and D)

Question 13

In a for statement, this expression is executed only once:

Accepted Answer

A)   the test
B)   null
C)   initialization
D)   validation
E)   None of theseF) B) and E)
G) A) and D)

Question 14

A while loop's body can contain multiple statements, as long as they are enclosed in braces.

Accepted Answer

A) True 
 B)False

Question 15

To write data to a file, you define an object of the __________ data type.

Accepted Answer

A)   outputFile
B)   ifstream
C)   fstream
D)   ofstreamE) A) and C)
F) All of the above

Question 16

Assuming outFile is a file stream object and number is a variable, which statement writes the contents of number to the file associated with outFile?

Accepted Answer

A)   write(outFile, number) ;
B)   outFile >> number;
C)   outFile 
D)   number >> outFile;E) A) and B)
F) A) and C)

Question 17

If you want to stop a loop before it goes through all of its iterations, the break statement may be used.

Accepted Answer

A) True 
 B)False

Question 18

What is the output of the following code segment?
N = 1;
While (n <= 5) 
Cout << n << ' ';
N++;

Accepted Answer

A)   1 2 3 4 5
B)   1 1 ... and on forever
C)   1 2 3 4 5 6
D)   1 2 3 4
E)   2 3 4 5F) A) and C)
G) D) and E)

Question 19

A statement that may be used to stop a loop's current iteration and begin the next one is

Accepted Answer

A)   break
B)   terminate
C)   re-iterate
D)   continue
E)   None of theseF) B) and D)
G) A) and B)

Question 20

These are operators that add and subtract one from their operands.

Accepted Answer

A)   plus and minus
B)   ++ and --
C)   binary and unary
D)   conditional and relational
E)   binary and ternaryF) None of the above
G) C) and E)

Exam 5: Loops and Files

A statement that causes a loop to terminate early is

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What is the output of the following code segment? N = 1; While (n <= 5) Cout << n << ' '; N++;

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A while loop's body can contain multiple statements, as long as they are enclosed in braces.

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To write data to a file, you define an object of the __________ data type.

Correct AnswerverifiedShow Answer

If you place a semicolon after the test expression in a while loop, it is assumed to be a(n)

Correct AnswerverifiedShow Answer

What will the following code display? Int x = 0; For (int count = 0; count < 3; count++) X += count; Cout << x << endl;

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A statement that may be used to stop a loop's current iteration and begin the next one is

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To allow file access in a program, you must use __________ in the header file.

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This means to increase a value:

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How many times will the following loop display "Looping again!"? For (int i = 0; i <= 20; i++) Cout << "Looping again!" << endl;

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You may nest while and do-while loops but you may not nest for loops.

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What will the following code display? int number = 6; number++; cout << number << endl;

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In a for statement, this expression is executed only once:

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A special value that marks the end of a list of values is a

Correct AnswerverifiedShow Answer

These are operators that add and subtract one from their operands.

Correct AnswerverifiedShow Answer

The two important parts of a while loop are the expression that is tested for a true or False value and

Correct AnswerverifiedShow Answer

Assuming outFile is a file stream object and number is a variable, which statement writes the contents of number to the file associated with outFile?

Correct AnswerverifiedShow Answer

It is possible to define a file stream object and open a file in one statement.

Correct AnswerverifiedShow Answer

If you want to stop a loop before it goes through all of its iterations, the break statement may be used.

Correct AnswerverifiedShow Answer

The __________ loop is a good choice when you know how many times you want the loop to iterate in advance of entering the loop.

Correct AnswerverifiedShow Answer

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