Question 1

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

Accepted Answer

A)   20
B)   19
C)   21
D)   an infinite number of times

Question 2

What will the following code display?
Int number = 6;
Cout << ++number << endl;

Accepted Answer

A)   6
B)   5
C)   7
D)   0

Question 3

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

Accepted Answer

A)   inputFile
B)   ifstream
C)   fstream
D)   ofstream

Question 4

The scope of a variable declared in a for loop's initialization expression always extends beyond the body of the loop.

Accepted Answer

A) True 
 B)False

Question 5

The increment and decrement operators can be used in mathematical expressions; however, they cannot be used in relational expressions.

Accepted Answer

A) True 
 B)False

Question 6

If you want a user to enter exactly 20 values, which loop would be the best to use?

Accepted Answer

A)   while
B)   for
C)   switch
D)   do-while
E)   None of these

Question 7

In C++ 11 you can pass a string object as an argument to a file stream object's open member function.

Accepted Answer

A) True 
 B)False

Question 8

You may define a __________ in the initialization expression of a for loop.

Accepted Answer

A)   constant
B)   function
C)   variable
D)   new data type
E)   None of these

Question 9

A for statement contains three expressions:
Initialization, test, and

Accepted Answer

A)   update
B)   reversal
C)   null
D)   validation
E)   None of these

Question 10

The statements in the body of a while loop may never be executed while the statements in the body of a do-while loop will be executed

Accepted Answer

A)   at least once
B)   at least twice
C)   never
D)   as many times as the user wishes
E)   None of these

Question 11

To write information to a file, use the

Accepted Answer

A)   cout object
B)   pen object
C)   output object
D)   stream insertion operator
E)   None of these

Question 12

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

Accepted Answer

A)   6
B)   5
C)   7
D)   0

Question 13

In the following statement, which operator is used first?
While (x++ < 10)

Accepted Answer

A)   ++
B)   
C)   neither; the expression is invalid
D)   cannot tell without the rest of the code

Question 14

This is a control structure that causes a statement or group of statements to repeat.

Accepted Answer

A)   decision statement
B)   loop
C)   cout object
D)   selection structure
E)   None of these

Question 15

What will the following code display?
Int number = 6;
Cout << number++ << endl;

Accepted Answer

A)   6
B)   5
C)   7
D)   0

Question 16

A while loop is somewhat limited because the counter can only be incremented by one each time through the loop.

Accepted Answer

A) True 
 B)False

Question 17

Something within a while loop must eventually cause the condition to become False or a(n)  __________ results.

Accepted Answer

A)   null value
B)   infinite loop
C)   unexpected exit
D)   compiler error
E)   None of these

Question 18

The condition that is tested by a while loop must be enclosed in parentheses and terminated with a semicolon.

Accepted Answer

A) True 
 B)False

Question 19

Assuming dataFile is a file stream object, the following statement:
DataFile.close() ;

Accepted Answer

A)   is illegal in C++
B)   needs a filename argument to execute correctly
C)   closes a file
D)   is legal but risks losing valuable data
E)   None of these

Question 20

A loop that is inside another loop is called a(n)

Accepted Answer

A)   infinite loop
B)   pre-test loop
C)   post-test loop
D)   nested loop
E)   None of these

Exam 5: Loops and Files

If you want a user to enter exactly 20 values, which loop would be the best to use?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In C++ 11 you can pass a string object as an argument to a file stream object's open member function.

Correct AnswerverifiedShow Answer

The scope of a variable declared in a for loop's initialization expression always extends beyond the body of the loop.

Correct AnswerverifiedShow Answer

This is a control structure that causes a statement or group of statements to repeat.

Correct AnswerverifiedShow Answer

A while loop is somewhat limited because the counter can only be incremented by one each time through the loop.

Correct AnswerverifiedShow Answer

To write information to a file, use the

Correct AnswerverifiedShow Answer

The increment and decrement operators can be used in mathematical expressions; however, they cannot be used in relational expressions.

Correct AnswerverifiedShow Answer

Something within a while loop must eventually cause the condition to become False or a(n) __________ results.

Correct AnswerverifiedShow Answer

You may define a __________ in the initialization expression of a for loop.

Correct AnswerverifiedShow Answer

The statements in the body of a while loop may never be executed while the statements in the body of a do-while loop will be executed

Correct AnswerverifiedShow Answer

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

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

Correct AnswerverifiedShow Answer

The condition that is tested by a while loop must be enclosed in parentheses and terminated with a semicolon.

Correct AnswerverifiedShow Answer

What will the following code display? Int number = 6; Cout << ++number << endl;

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What will the following code display? Int number = 6; Cout << number++ << endl;

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Assuming dataFile is a file stream object, the following statement: DataFile.close() ;

Correct AnswerverifiedShow Answer

A loop that is inside another loop is called a(n)

Correct AnswerverifiedShow Answer

A for statement contains three expressions: Initialization, test, and

Correct AnswerverifiedShow Answer

In the following statement, which operator is used first? While (x++ < 10)

Correct AnswerverifiedShow Answer

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