What is a variable?

• A word used in a program to refer to an area of computer memory where data used in the program will be store

• A label used to refer to an area of the school where books have been stored

• When a program repeats a section of code

We define a variable when we assign a value to the variable identifier (variable name).

For example:

In python, if a question asks to assign the value John to a variable called name, it means that I need to write:

name="John"

• False

• True

Problem assign number 5.0 to a variable called 'price'

Solution: in Python, I can code it using ...

• score == 5

• score = 5.0

• number = 50

• score = "5.0"

price = 8.2

In python, what is the type of Price Variable ?

• float / real

• integer

• string

• boolean

postcode= "BL1 2AA"

What is the type of Postcode Variable ?

• float

• real

• string

• integer

Problem: assign the number 60 to a variable called 'students'.

remember: later in the code, I may need to add or multiply this number.

Solution: in Python, I can code it using ...

• students= 60

• students= 60.0

• number = 50

• students= "60"

age= 18

What is the type of Age Variable ?

• float / real

• integer

• string

• boolean

storage= "28"

What is the type of Storage Variable ?

• float / real

• integer

• string

• boolean

status= False

What is the type of Status Variable ?

• float / real

• integer

• string

• boolean

status= "False"

What is the type of Status Variable ?

• float / real

• integer

• string

• boolean