For loop in PowerShell - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a for loop in PowerShell?

A for loop is a control structure that repeats a block of code a specific number of times. It uses a counter to track iterations.

beginner

What are the three parts of a PowerShell for loop header?

1. Initialization (sets the counter)<br>2. Condition (checks if the loop should continue)<br>3. Increment/Decrement (updates the counter each time)

beginner

How do you write a for loop in PowerShell that counts from 1 to 5?

for ($i = 1; $i -le 5; $i++) {<br> Write-Output $i<br>}

beginner

What happens if the condition in a for loop is never true?

The loop body does not run at all because the condition is checked before each iteration.

intermediate

How can you exit a for loop early in PowerShell?

Use the break statement inside the loop to stop it immediately.

Which part of the for loop controls how many times the loop runs?

A The loop body

B The initialization

C The increment

D The condition

The condition is checked before each loop iteration to decide if the loop should continue.

What does this for loop do? for ($i=0; $i -lt 3; $i++) { Write-Output $i }

A Prints nothing

B Prints 1, 2, 3

C Prints 0, 1, 2

D Prints 0, 1, 2, 3

The loop runs while $i is less than 3, so it prints 0, 1, and 2.

What keyword stops a for loop immediately in PowerShell?

A break

B stop

C exit

D continue

break exits the loop immediately.

If the initialization is missing in a for loop, what happens?

A It depends on the condition and increment

B The loop will not run

C The loop runs infinitely

D PowerShell throws an error

The loop behavior depends on the condition and increment; initialization is optional but usually needed.

Which symbol is used for incrementing the counter by 1 in PowerShell for loops?

A $i--

B $i++

C $i+=2

D $i*=

$i++ increases the counter by 1 each time.

Explain how a for loop works in PowerShell and write a simple example that prints numbers from 1 to 3.

Think about setting a counter, checking it, and increasing it each time.

Describe how you can stop a for loop before it finishes all iterations in PowerShell.

What keyword lets you jump out of the loop?