Return values in PowerShell - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to return the sum of two numbers.

PowerShell

function Add-Numbers {
  param($a, $b)
  return $a [1] $b
}
Add-Numbers 3 4

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A+

B-

C/

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Using subtraction or multiplication instead of addition.

Forgetting to use the return keyword.

The return statement returns the sum of $a and $b using the + operator.

2fill in blank

medium

Complete the code to return the length of a string.

PowerShell

function Get-Length {
  param($text)
  return $text.[1]
}
Get-Length 'hello'

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ASize

BLength()

CCount

DLength

Attempts:

3 left

💡 Hint

Common Mistakes

Using Length() as a method instead of a property.

Using Count which is for collections, not strings.

The Length property returns the number of characters in the string.

3fill in blank

hard

Fix the error in the function to correctly return the square of a number.

PowerShell

function Get-Square {
  param($num)
  return $num [1] 2
}
Get-Square 5

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A^^

B^

C**

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Using ^ which is bitwise XOR in PowerShell.

Using multiplication * which is not exponentiation.

PowerShell uses ** for exponentiation to return the square of a number.

4fill in blank

hard

Fill both blanks to return only even numbers from a list.

PowerShell

$numbers = 1..10
function Get-Evens {
  param($nums)
  return $nums | Where-Object { $_ [1] 2 [2] 0 }
}
Get-Evens $numbers

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A%

B==

C-eq

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using == which is not the equality operator in PowerShell.

Using != which means not equal.

The modulo operator % finds the remainder. -eq checks if remainder equals zero, meaning the number is even.

5fill in blank

hard

Fill all three blanks to return a dictionary of words and their lengths for words longer than 3 characters.

PowerShell

$words = @('cat', 'house', 'dog', 'elephant')
$result = @{}
foreach ($word in $words) {
  if ($word.[1] [2] 3) {
    $result[$word] = $word.[3]
  }
}
$result

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ALength

B-gt

C-le

D-lt

Attempts:

3 left

💡 Hint

Common Mistakes

Using -le or -lt which mean less or less equal.

Using wrong property names or operators.

Length gets the word length. -gt means greater than, so words longer than 3 are included.