Logic and Design Review Questions

Which operator would make the following expression true? False ____ True

OR

How many times will the following loop iterate? Set k = 1 Do Display k Set k = k + 1 Until k > 1

One

What is the first step to use in detecting data type mismatch errors?

Read the input as a string

Examine the following piece of code and determine the data type of the function's return value. Function Real sum ( Integer num1, Integer nume2) Declare Integer result Set result = num1 + num2 Return result End Function

Real

What type of operator can be used to determine whether a specific relationship exists between two values?

Relational

What type of the operators are the following? > < >= <= == !=

Relational

Which structure causes a statement or set of statements to execute repeatedly?

Repetition

What term is used in the ending terminal symbol of a function flowchart?

Return

A loop that accumulates a total as it read each number from a series is often said to keep a what?

Running total

The function _____ specifies the return data type, name of the function, and the parameter variable(s).

Header

The statements that appear between the While and the End While clauses are called the _____.

Body of the loop

A condition is a _____ expression.

Boolean

In addition to using loop to validate data, ____ can also be used to validate data.

Boolean Function

The variable r would contain the value ____ after the execution of the following statement. Declare Integer i = 12 Declare Real r Set r = toReal (i)

12.0

The _____ operator could be used, in some situations, to simplify nested selection structures.

AND

Which operator is best to determine whether x contains a value in the range of 10 through 57?

AND

Which operator would make the following expression false? True ____ False

AND

What two logical operators perform short-circuit evaluation?

AND and OR

Which of the following statements is true after the execution of the following statement? Set needANumber = random(5,10)

All of these (A random number is generation between 5 and 10, The random number is assigned to the variable needANumber, the numbers 5 and 10 are the arguments of the random number function)

Which of the following is a logical operator

All of these (AND, NOT, OR)

Random numbers are commonly used in which type of program?

All of these (Games, Simulations, Statistical analysis, Data encryption)

The term _____ is used to describe any mechanism that accepts input, performs some operation that cannot be seen on the input, and produces output.

Black box

The function _____ comprises one or more statements that are executed when the function is called

Body

What type of loop uses a Boolean expression to control the number of times that it repeats a statement or set of statements?

Condition-controlled

Which function accepts two strings as arguments, returns "True" if the first string contains the second string, and otherwise returns "False"?

Contains

Which structure is a logical design that controls the order in which a set of statements executes?

Control

The following is an example of what type of loop? For k = 7 To maxValue

Count-controlled

To ____ a variable mean to decrease its value

Decrement

The ____ symbol indicates that some condition must be tested in a flowchart.

Diamond

Which loop repeats a statement or set of statements as long as the Boolean expression is false?

Do-Until

Which of these are posttest loops?

Do-While and Do-Until

____ happens when an input operation attempts to read data, but there is no data to read.

Empty input

Which loop is specifically designed to initialize, test, and increment a counter variable?

For

Which loop statement does not contain an increment statement but automatically increments the counter at the end of each iteration?

For

A _____ is a module that returns a value back to the part of the program that called it.

Function

How many times will the following loop iterate? Set k = 1 While k <= 5 Display k End While

Infinite

In the IPO chart, the ____ column describes the data that is passed to the function as arguments.

Input

What is the data type of the value returned by the random library function?

Integer

A case structure is a ____ alternative decision structure.

Multiple

If the expression is false, the _____ operator will return true.

NOT

The ____ operator is a unary operator, as it works with only one operand.

NOT

Which of the following operators reverse the logic of its operand?

NOT

How many times will the following loop iterate? Set k = 1 While k > 5 Display k End While

No iterations

Which operator is used to determine that the operands are not exactly of the same value?

None of these (=, !, =!, ==)

Which of the following is optional when writing a function definition?

None of these (Function header, Function body, Data type, Return statement)

The _____ represents a special value that marks the end of a list of values.

Sentinel

Consider the following statement: A store is giving a discount of 30% for all purchases over $100. Which of the following is not the appropriate structure to used to program the statement?

Sequence

The amount by which the counter variable is incremented in a For loop is known as what?

Step amount

Which function returns a string withing a string?

Substring

In many languages the case structure is called a ____ statement.

Switch

Which of the following statements is true about this Boolean expression? score < 0 AND score > 100

This expression would never be true

How many times will the following loop iterate? For j = 1 To 5 Step 2 Display J End For

Three

In a count-controlled loop, the counter performs ____ action(s).

Three

Which of the following errors occur when a real value is attempted to be assigned to an integer variable?

Type mismatch

Which pair of loops causes a statement or set of statements to repeat as long as a condition is true?

While and Do-While

Which of the following library functions could be used to validate that the correct data type was input for an amount of money?

isReal

The ____ function does the same thing as using the mathematical ^ operator.

pow

Examine the following piece of code and state the return value of the function. Function Real sum ( Integer num1, Integer nume2) Declare Real result Set result = num1 + num2 Return result End Function

result

Which of the following statements is true after the execution of the following statement? y = abs(x)

y contains the absolute value of the value in x