Powershell Do while loop with inside If else statement - powershell

Question

I would like to develop a looping which if the error was caught, and attempts 3 times, then stop and exit.
The question is how to make the loop count 3 times and stop it?
Thanks.
Powershell Code
function loop() {
$attempts = 0
$flags = $false
do {
try {
Write-Host 'Updating...Please Wait!'
***Do something action***
Write-Host 'INFO: Update Completed!' -BackgroundColor BLACK -ForegroundColor GREEN
Start-Sleep 1
$flags = $false
} catch {
Write-Host 'Error: Update Failure!' -BackgroundColor BLACK -ForegroundColor RED
$attempts++
$flags = $true
Start-Sleep 2
}
} while ($flags)
}

Answer 1

Insert the following at the start of your try block:
if($attempts -gt 3){
Write-Host "Giving up";
break;
}
break will cause powershell to exit the loop

Answer 2

I would rewrite this as a for-loop for clearer code:
foreach( $attempts in 1..3 ) {
try {
Write-Host 'Updating...Please Wait!'
***Do something action***
Write-Host 'INFO: Update Completed!' -BackgroundColor BLACK -ForegroundColor GREEN
Start-Sleep 1
break # SUCCESS-> exit loop early
} catch {
Write-Host 'Error: Update Failure!' -BackgroundColor BLACK -ForegroundColor RED
Start-Sleep 2
}
}
From just looking at the first line, we can clearly see that this is a counting loop. It also lets us get rid of one variable so we have less state, making the code easier to comprehend.

Answer 3

$i = 0
if ( $(do { $i++;$i;sleep 1} while ($i -le 2)) ) {
"i is $i"
}
i is 3