Integer and floating-point types in PowerShell - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is an integer type in PowerShell?

An integer type is a number without decimals. It can be positive or negative, like 5 or -10.

beginner

What is a floating-point type in PowerShell?

A floating-point type is a number that can have decimals, like 3.14 or -0.5.

beginner

How do you declare an integer variable in PowerShell?

You can declare an integer by assigning a whole number to a variable, for example: $num = 10

beginner

How do you declare a floating-point variable in PowerShell?

You declare it by assigning a decimal number to a variable, for example: $num = 3.14

intermediate

What happens if you add an integer and a floating-point number in PowerShell?

PowerShell converts the integer to floating-point and adds them, keeping the decimal part.

Which of these is an integer in PowerShell?

A 42

B 3.14

C "42"

D True

42 is a whole number without decimals, so it is an integer.

What type is the number 7.0 in PowerShell?

A Integer

B String

C Boolean

D Floating-point

7.0 has a decimal point, so it is a floating-point number.

How does PowerShell treat the expression 5 + 2.5?

A As floating-point addition

B As integer addition

C As string concatenation

D As an error

PowerShell converts 5 to floating-point and adds 2.5, resulting in 7.5.

Which variable assignment creates a floating-point number?

A $x = 10

B $x = 10.0

C $x = '10'

D $x = $true

10.0 has a decimal, so $x becomes a floating-point number.

What is the output type of this code? `$a = 3; $b = 4.5; $c = $a + $b`

A Integer

B Boolean

C Floating-point

D String

Adding integer 3 and floating-point 4.5 results in floating-point 7.5.

Explain the difference between integer and floating-point types in PowerShell.

Think about numbers you use in daily life like 5 vs 3.14.

Describe what happens when you add an integer and a floating-point number in PowerShell.

Consider how 5 + 2.5 becomes 7.5.