Question 1

What will the following expression evaluate to?
!( 6 > 7 || 3 == 4)

Accepted Answer

A)   0
B)   -1
C)   6
D)   True
E)   falseF) C) and D)
G) A) and B)

Question 2

What will the following statement do if x equals 17 and answer = 20?
Answer = x > 100 ?
0 : 1;

Accepted Answer

A)   Assign 0 to answer.
B)   Assign 0 to x.
C)   Assign 1 to answer.
D)   Assign 1 to x.
E)   Assign 17 to answer.F) D) and E)
G) B) and D)

Question 3

In C++ when a relational expression is false, it has the value

Accepted Answer

A)   1.
B)   0.
C)   -1.
D)   "0".
E)   of any negative number.F) B) and C)
G) All of the above

Question 4

The following statements will not print anything.
x = 5;
if (x < 5)
cout << "Hello ";
cout << "world 
";

Accepted Answer

A) True 
 B)False

Question 5

A trailing else placed at the end of an if/else if statement provides a default action when ________ of the if conditions is/are True.

Accepted Answer

A)   none
B)   any one
C)   only the last one
D)   at least two
E)   allF) C) and D)
G) A) and C)

Question 6

An expression in a C++ if statement that evaluates to 5, -5, or for that matter anything other than 0, is considered True.

Accepted Answer

A) True 
 B)False

Question 7

The ________ operator takes an operand and reverses its truth or falsehood.

Accepted Answer

A)   relational
B)   &&
C)   ||
D)   !
E)   !=F) B) and D)
G) None of the above

Question 8

Assuming goodData is a Boolean variable, the following two tests are logically equivalent.
if (goodData == false)
if (!goodData)

Accepted Answer

A) True 
 B)False

Question 9

All of the relational operators are binary.

Accepted Answer

A) True 
 B)False

Question 10

When a program lets the user know that an invalid menu choice has been made, this is an example of

Accepted Answer

A)   input validation.
B)   output validation.
C)   menu reselection.
D)   invalidation.
E)   being user unfriendly.F) D) and E)
G) B) and E)

Question 11

Relational operators allow you to ________ numbers.

Accepted Answer

A)   add
B)   multiply
C)   compare
D)   average
E)   verifyF) A) and D)
G) A) and B)

Question 12

The ________ statement executes one statement, or block of statements, if a condition is True and skips it, doing nothing, if the condition is false.

Accepted Answer

A)   if
B)   if/else
C)   if/else if
D)   switch
E)   if/endifF) B) and E)
G) B) and D)

Question 13

To check if a variable has a particular value, use the = relational operator, as in the statement
if (s = 3)
cout << "S has the value 3";

Accepted Answer

A) True 
 B)False

Question 14

The ________ statement acts like a chain of if statements. Each performs its test, one after the other, until one of them is found to be True or until the construct is exited without any test ever evaluating to True.

Accepted Answer

A)   if/then
B)   if/else
C)   if/else if
D)   if/not if
E)   if/endifF) B) and E)
G) D) and E)

Question 15

A switch statement branches to a particular block of code depending on the value of a numeric (i.e. integer or floating-point) variable or constant.

Accepted Answer

A) True 
 B)False

Question 16

The default section of a switch statement performs a similar task as the ________ portion of an if/else if statement.

Accepted Answer

A)   conditional test
B)   break
C)   trailing else
D)   else if
E)   bodyF) A) and D)
G) A) and E)

Question 17

Assuming moreData is a Boolean variable, the following two tests are logically equivalent.
if (moreData == True)
if (moreData)

Accepted Answer

A) True 
 B)False

Question 18

If s1 and s2 are string objects, s1 == s2 is True when

Accepted Answer

A)   s1 = "lion" and s2 = "lioness".
B)   s1 = "dog" and s2 = "DOG".
C)   s1 = "cat" and s2 = "cat ".
D)   None of these because in each case one or more characters in the strings have different ASCII codes.
E)   None of these because string objects cannot be compared with relational operators.F) B) and C)
G) C) and D)

Question 19

The expression x < y is called a(n)  ________ expression.

Accepted Answer

A)   arithmetic
B)   logical
C)   relational
D)   comparison
E)   binaryF) A) and E)
G) B) and E)

Question 20

If the sub-expression on the left side of an && operator is True, the expression on the right side will not be checked.

Accepted Answer

A) True 
 B)False

Exam 4: Making Decisions

The following statements will not print anything. x = 5; if (x < 5) cout << "Hello "; cout << "world \n";

Correct AnswerverifiedShow Answer

What will the following statement do if x equals 17 and answer = 20? Answer = x > 100 ? 0 : 1;

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The ________ operator takes an operand and reverses its truth or falsehood.

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Relational operators allow you to ________ numbers.

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What will the following expression evaluate to? !( 6 > 7 || 3 == 4)

Correct AnswerverifiedShow Answer

An expression in a C++ if statement that evaluates to 5, -5, or for that matter anything other than 0, is considered True.

Correct AnswerverifiedShow Answer

Assuming moreData is a Boolean variable, the following two tests are logically equivalent. if (moreData == True) if (moreData)

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A switch statement branches to a particular block of code depending on the value of a numeric (i.e. integer or floating-point) variable or constant.

Correct AnswerverifiedShow Answer

A trailing else placed at the end of an if/else if statement provides a default action when ________ of the if conditions is/are True.

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The expression x < y is called a(n) ________ expression.

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To check if a variable has a particular value, use the = relational operator, as in the statement if (s = 3) cout << "S has the value 3";

Correct AnswerverifiedShow Answer

The ________ statement executes one statement, or block of statements, if a condition is True and skips it, doing nothing, if the condition is false.

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The ________ statement acts like a chain of if statements. Each performs its test, one after the other, until one of them is found to be True or until the construct is exited without any test ever evaluating to True.

Correct AnswerverifiedShow Answer

In C++ when a relational expression is false, it has the value

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The default section of a switch statement performs a similar task as the ________ portion of an if/else if statement.

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Assuming goodData is a Boolean variable, the following two tests are logically equivalent. if (goodData == false) if (!goodData)

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All of the relational operators are binary.

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If s1 and s2 are string objects, s1 == s2 is True when

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If the sub-expression on the left side of an && operator is True, the expression on the right side will not be checked.

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When a program lets the user know that an invalid menu choice has been made, this is an example of

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