Deck 5: Making Decisions

Question 1

The not equal (!=),and equal (==)symbols are overloaded operators.

Answer 1

True

Question 2

With a two-way if statement,either the true statement(s)is (are)executed or the false statement(s),or both.

Answer 2

False

Question 3

Equality comparisons with floating-point and decimal types often produce unpredictable results.

Answer 3

True

Question 4

The three basic programming constructs are simple sequence,selection,and iteration.

Question 5

The conditional expression true || false produces false.

Question 6

Relational operators allow you to test variables to see if one is greater or less than another variable or value.

Question 7

No fall through is permitted in C# if the previous case label has code.

Question 8

In C#,the && and || operators are also called the short-circuiting logical operators.

Question 9

The switch statement is considered a multiple selection structure and it also goes by the name case statement.

Question 10

The conditional expression,sometimes called "the test," must evaluate to true.

Question 11

When you have a single variable being tested for equality against four or more values,a one-way selection statement is the most appropriate type of conditional expression to use.

Question 12

Boolean variables store 0 to represent off or false and 1 to represent on or true.

Question 13

In C#,both the break and default are optional entries found with a switch statement.

Question 14

The <,>,<=,and >= are called the logical operators of the language.

Question 15

An exclamation point followed by a single equal symbol (!=)represents not equal in C#.

Question 16

The rule for lining up,or matching,elses is that the else is matched with the first if,from top to bottom.

Question 17

A comparison to determine whether the uppercase character S is less than the uppercase character W produces false.

Question 18

With an if statement,when you place a semicolon on the line that has the conditional expression,you create a null (empty)statement body for the true portion of the if statement.

Question 19

Conditional expressions produce a Boolean result.

Question 20

Two equal symbol characters == are used as the assignment operator.

Question 21

Using a single equal symbol inside a conditional expression,where a test was intended,causes a syntax error to be issued in C#.

Question 22

The short-circuiting logical operators ____.

A) enable doing as little as is needed to produce the final result
B) produce a boolean result of true
C) are performed before any other statements are executed
D) cause the program to stop execution when the expression is evaluated

Question 23

Assignment operators appear at the top of the hierarchy in the operator precedence table.

Question 24

The ternary operator ( ? : )provides another way to express a simple if...else selection statement.

Question 25

When you compare characters stored in char memory locations using relational operators,____.

A) they are compared lexicographically
B) you receive an error message
C) they are always considered equal
D) you get inconsistent results

Question 26

Class diagrams list the data field members in the center rectangle and the methods or behaviors in the bottom rectangle.

Question 27

The logical operators in C# are ____.

A) >, <, >=, <=
B) && and ||
C) != and ==
D) ==, =, and !=

Question 28

When strings are compared,the first character in the first operand is compared against the first character in the second operand.

Question 29

The expression,(5 > 57 % 8),evaluates to ____.

A) true
B) false
C) 1
D) 5 > 1

Question 30

Iteration,also called selection is used for decision making and allows your program statements to deviate from the sequential path and perform different statements based on the value of an expression.

Question 31

After completing the program,you should compare the results produced with the desk checked calculated results.

Question 32

Which of the following is NOT one of the basic programming constructs?

A) simple sequence
B) selection
C) iteration
D) event

Question 33

In the statement above,the entry inside the parentheses is called the ____.

A) conditional expression
B) truth value
C) selection construct
D) statement body

Question 34

String operands can be compared using the relational symbols.They are compared lexicographically using their Unicode character representation.

Question 35

The equality operator in C# is ____.

A) =
B) !=
C) ==
D).equals

Question 36

The assignment operators and the conditional operator ? : are right-associative.

Question 37

The result of the expression above is ____.

A) true or false
B) true
C) numeric
D) 100

Question 38

Selection statements must include a Boolean variable.

Question 39

____ perform differently based on their operands.

A) Overloaded operators
B) Conditional expressions
C) Boolean operators
D) Relational operators

Question 40

if (examScore > 89) grade = 'A';
The expression above is considered a(n)____.

A) iteration statement
B) two-way if statement
C) one-way if statement
D) simple sequence instruction

Question 41

Which of the following statements is NOT true regarding switch statements?

A) The expression is sometimes called the selector.
B) Default is only executed when there is no match.
C) Default is required.
D) A variable cannot be used as the case label.

Question 42

if (amount > 1000)
result = 1;
else
if (amount > 500)
result = 2;
else
if (amount > 100)
result = 3;
else
result = 4;
What is stored in result when amount is equal to 14?

A) 1
B) 2
C) 3
D) 4

Question 43

When you place an if statement within another if statement,____.

A) a syntax error is generated
B) curly braces are required
C) you create a switch statement
D) you create a nested if statement

Question 44

The switch statement case value can evaluate to all of the following EXCEPT ____.

A) double
B) int
C) string
D) char

Question 45

When a single variable may need to be tested for five different values,the most readable solution would be a(n)____.

A) one-way if statement
B) two-way if statement
C) switch statement
D) nested if....else statement

Question 46

What is the rule for lining up,or matching,elses?

A) The first else goes with the first if.
B) Else goes with the closest previous if that does not have its own else.
C) The else goes with the one that is indented identically to it.
D) Else matches the closest if that follows it.

Question 47

Which of the following statements regarding curly braces is NOT correct as they relate to their use with an if statement?

A) They are required when there is more than one statement following the if or else.
B) They can be added to increase readability.
C) They are used to block three or more statements.
D) They can be used with the true statements and omitted with the false statements.

Question 48

if (a > 10)
if (b > 10)
if (c > 10)
result = 1;
else
if (b > 100)
result = 2;
else
result = 3;
else
result = 4;
else
result = 5;
What is stored in result when a is equal to zero,b and c are equal to 100?

A) 1
B) 3
C) 4
D) 5

Question 49

Placing a semicolon onto the end of the conditional one-way if statement ____.

A) causes the expression to evaluate to false
B) produces a syntax error
C) causes the expression to evaluate to true
D) produces a null empty bodied true statement

Question 50

if (examScore > 89); grade = 'A';
Using the code snippet above,when does grade get assigned a value of 'A'?

A) whenever the score is greater than 89
B) when the score is less than or equal to 89
C) never, a syntax error is generated
D) every time the program is run

Question 51

switch (phoneDigit)
{
case 1:
num = 1;
break;
case 2:
num = 2;
break;
case 3:
num = 3;
break;
case 4:
num = 4;
break;
default:
num = 0;
break;
}
Looking at the example above,what happens if the break is omitted?

A) a syntax error is generated
B) num is always assigned 0
C) num is never assigned a value
D) num is assigned 1

Question 52

if (amount > 1000)
result = 1;
else
if (amount > 500)
result = 2;
else
if (amount > 100)
result = 3;
else
result = 4;
What is stored in result when amount is equal to 12000?

A) 1
B) 2
C) 3
D) 4

Question 53

switch (phoneDigit)
{
case 1:
num = 1;
break;
case 2:
num = 2;
break;
case 3:
num = 3;
break;
case 4:
num = 4;
break;
default:
num = 0;
break;
}
Looking at the example above,when phoneDigit has a value of 'Q',what value is stored in num?

A) 1
B) 0
C) Q
D) not enough information given

Question 54

if (aValue < largest ) result = aValue;
Else
Result = largest;
What happens when aValue is equal to largest in the program segment above?

A) result is assigned aValue
B) result is assigned largest
C) nothing, neither assignment statement is executed
D) an error is reported

Question 55

if (examScore > 89) grade = 'A';
Console.WriteLine("Excellent");
Using the code snippet above,when does Excellent get displayed?

A) whenever the score is greater than 89
B) when the score is less than or equal to 89
C) never, a syntax error is generated
D) every time the program is run

Question 56

if (a > 10)
if (b > 10)
if (c > 10)
result = 1;
else
if (b > 100)
result = 2;
else
result = 3;
else
result = 4;
else
result = 5;
What is stored in result when a,b and c are equal to 200?

A) 1
B) 2
C) 3
D) 4

Question 57

How can the compound conditional expression ((average > 79 && average <= 89))be written to eliminate the logical operator - without changing the logic?

A) remove the && and create a nested if statement
B) (average > 79 <= 89)
C) by replacing the && with ||
D) (79 > average <= 89)

Question 58

if (value1 > value2) largestOne = value1;
Else
If (value1 < value2)
LargestOne = value2;
Else
LargestOne = -(value1);
Using the nested if program statements,assuming value1 is 100 and value2 is 100,what is stored in largestOne above?

A) value1
B) value2
C) -(value1)
D) not enough information is given

Question 59

if (amount > 1000)
result = 1;
else
if (amount > 500)
result = 2;
else
if (amount > 100)
result = 3;
else
result = 4;
What is stored in result when amount is equal to 876?

A) 1
B) 2
C) 3
D) 4

Question 60

A company issues $5,000.00 bonuses at the end of the year to all employees who earn less than $100,000.Salary and bonus are both defined as double data types.Which of the following selection statements would assign the correct amount to bonus?

A) if (salary < $100,000)
Bonus == $5000;
B) if (salary < 100000)
Bonus = 5000;
C) if (salary <= 100000)
Bonus = 5000;
D) if (salary < 100000);
Bonus = $5000;

Question 61

By properly ____________ the else clauses with their corresponding if clauses,you encounter fewer logic errors that necessitate debugging.

Question 62

The ____________ method will convert a string value sent as an argument to its equivalent numeric value,but it doesn't throw an exception when the conversion fails.

Question 63

Forms of the if statement include one-way,two-way,____________,multiway,and compound.

Question 64

____________ operators allow you to test variables to see if one is greater or less than
another variable or value.

Question 65

With a switch statement,if no match is made,the statements associated with ____________ are executed.

Question 66

A conditional expression is also referred to as a(n)____________.

Question 67

With ____________,as soon as the value of the entire expression is known,evaluation stops.

Question 68

C# does not allow a fall through and requires the ____________ statement for any case that has an executable statement.

Question 69

With the precedence rules or order of operations,____________ operators are always listed at the bottom of the hierarchy.

Question 70

The conditional operator,also called the ____________ provides another way to express a simple if...else selection statement.

Question 71

You cannot use the ____________ statement to test for a range of values.

Question 72

Conditional expressions produce a(n)____________ result.

Question 73

The equality operator in C# is represented by ____________.

Question 74

These categories are referred to as the basic programming constructs are simple sequence,iteration and ____________.

Question 75

The switch statement also goes by the name ____________.