Why control flow directs execution in PowerShell - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print numbers from 1 to 3 using a loop.

PowerShell

for ($i = 1; $i -le 3; $i[1]) { Write-Output $i }

Drag options to blanks, or click blank then click option'

A++

B+=

C--

D-=

Attempts:

3 left

💡 Hint

Common Mistakes

Using += which requires a value like 1, causing a syntax error.

Using -= or -- which decrease the value and cause an infinite loop.

The ++ operator increases the value of $i by 1 each loop, allowing the loop to progress from 1 to 3.

2fill in blank

medium

Complete the code to check if a number is positive and print a message.

PowerShell

if ($number [1] 0) { Write-Output 'Positive number' }

Drag options to blanks, or click blank then click option'

A-ne

B-gt

C-eq

D-lt

Attempts:

3 left

💡 Hint

Common Mistakes

Using -lt which checks for less than, not greater than.

Using -eq which checks for equality, not greater than.

The operator -gt means 'greater than'. It checks if $number is greater than 0.

3fill in blank

hard

Fix the error in the loop condition to stop at 5.

PowerShell

while ($count [1] 5) { Write-Output $count; $count += 1 }

Drag options to blanks, or click blank then click option'

A-gt

B-ge

C-le

D-lt

Attempts:

3 left

💡 Hint

Common Mistakes

Using -le which includes 5 and may cause an extra loop.

Using -gt or -ge which reverse the logic.

The loop should continue while $count is less than 5, so -lt is the correct operator.

4fill in blank

hard

Fill both blanks to create a loop that prints even numbers from 2 to 10.

PowerShell

for ($num = 2; $num [1] 10; $num [2] 2) { Write-Output $num }

Drag options to blanks, or click blank then click option'

A-le

B-lt

C+=

D-=

Attempts:

3 left

💡 Hint

Common Mistakes

Using -lt which excludes 10 from the loop.

Using -= which decreases the number and causes an infinite loop.

The loop runs while $num is less than or equal to 10 (-le), and increases $num by 2 each time (+=).

5fill in blank

hard

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

PowerShell

$lengths = @{}; foreach ([3] in $words) { if ([3].Length -gt 3) { $lengths[[1]] = [2] } }

Drag options to blanks, or click blank then click option'

A$word

B$word.Length

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names for key and loop variable.

Using the word itself as value instead of its length.

The dictionary uses word as the key, word.Length as the value, and loops over word in $words. The condition checks if the length is greater than 3.