Evaluating Mathematical, Relational, and Logical Expressions

40 Questions

What is the purpose of program files?

Contain the instructions to tell the computer what to do

In the expression 8 - 3, which of the following is the operator?

What is the purpose of logical operators?

Tell the computer what type of processing needs to be done

What is a resultant in an expression?

The answer that results when the operation is completed

What are operands in an expression?

Constants or variables that are processed by operators

Which of the following is an example of a numeric data type?

5,297

What type of data includes whole numbers only?

Integers

Which data type is required for numeric calculations?

Real numbers

Which of the following is an example of character data?

'A'

What is the most common data type among numeric, character, and logical data?

Numeric data

What is the main characteristic of real numbers?

They include whole numbers and decimal parts

In character data, what do single digit numbers, letters, and special characters form?

String Data

What differentiates an upper case letter from a lower case letter in character data?

The computer treats them as different characters

Which values are included in logical data?

True and False

What is a rule regarding data type mixing in programming?

Data types cannot be mixed

What is the correct data type for the words True and False?

Logical data type

Which set of numbers does the character data type use?

All available characters

What happens if a user enters a value into a variable location that is not designated as numeric data type for calculations?

The computer will return an error message

How does the computer store data internally in memory locations?

Each memory location holds one value at a time

Where are data, information, or programs kept for future use if they need to be stored externally?

External storage medium like a hard disk drive

What is a constant in programming?

An alphabetical and/or numeric value that never changes during processing

Which of the following is a rule for naming variables?

All variable names must start with a letter of the alphabet or an underscore

In programming, what is the purpose of logical data?

To handle operations based on true or false conditions

Which term is often used interchangeably with 'identifier' in programming languages?

Variable

What type of data can constants represent in programming?

Any type of data—numeric, alphabetical, or special symbols

When evaluating a mathematical expression, what does the programmer use?

Integers and real numbers

Which type of expression involves relational operators?

Logical expressions

In evaluating a relational expression, what kind of values are utilized by the programmer?

Integers and real numbers

What type of expression involves both relational and logical operators?

Logical expressions

When dealing with character data, what type of expressions does a programmer typically write?

Character expressions

What operator is used to store the result of an expression in a memory location?

Which of the following is essential in a mathematical equation for computer use?

All variables, constants, and operators on the same line

When setting up a relational expression, what is its primary purpose?

Make decisions based on conditions

Which of the following is an incorrect requirement when setting up a numeric expression for computer use?

All variables, constants, and operators on different lines

In a computer expression, what does the equal (=) sign represent?

Result storage operation

When modifying a mathematical expression for computer use, what must be ensured about variables and constants?

They should be on the same line

What is the purpose of a relational expression in programming?