Variables and Constants - Starter Activity

What is the type of data of the following value: “Hello”

• String

• Integer

• Boolean

• Array

What is the type of data of the following value: ‘A’

• Character (Char)

• Integer (Int)

• String

• Boolean

What is the type of data of the following value: 98675

• Integer (Int)

• String

• Boolean

• Float

What is the type of data of the following value: 1.256

• Float (or Double/Decimal)

• Integer

• String

• Boolean

What is the type of data of the following value: True

• Boolean

• String

• Integer

• List

Variables and constants in programming are:

• Values that can change and values that remain fixed during program execution.

• Only values that can change during program execution.

• Only values that remain fixed during program execution.

• Unrelated to program execution.

Variables and constants are differentiated in code by their ability to change value. Which statement best explains their uses?

• Variables can change value during program execution, while constants remain fixed.

• Variables and constants both change value during execution.

• Constants can change value, but variables cannot.

• Variables and constants are not used in programming.

What are variables in computer programs?

• Variables are locations in memory where computer programs can store data.

• Variables are the output devices connected to a computer.

• Variables are the instructions that a computer executes.

• Variables are the names of computer programming languages.

What is an identifier in the context of variables?

• An identifier is the name by which a variable can be referenced.

• An identifier is the value stored in a variable.

• An identifier is a type of data structure.

• An identifier is a reserved keyword in programming languages.

Which of the following is NOT a rule for identifiers?

• Identifiers must be meaningful

• Identifiers must start with a number

• All identifiers must be in the same format

• Identifiers must start with a letter