Conditionals, Operators & Regex

$s1 = "Kumar"

if($s1 -eq "Pavan") {
    Write-Host "Done";
} elseif($s1 -eq "Kumar") {
    Write-Host "Not Done";
} else {
    Write-Host "ELSE..."
}

switch($s1) {
    "Pavan" {Write-Host "Done";}
    "Kumar" { Write-Host "Not Done";}
    default { Write-Host "ELSE..."}
}

# ($s1 -eq "Pavan") ? (Write-Host "Done") : (Write-Host "Not Done")
# ❌ Windows PowerShell 5.1 → ? is invalid → parser error
# ✅ PowerShell 7+ → works fine

[String[]]$arr = @("apple", "orange", "Kiwi", "guava")

for($i = 0; $i -lt $arr.Length; $i++) {

    if($arr[$i] -eq "orange") {
        continue
    }

    if ($arr[$i] -eq "guava") {
        break
    }

    Write-Host "Fruit -> $($arr[$i])"
}

Write-Host

$i = 1;
while($i -le 5) {
    Write-Host "$i th Iteration";
    $i++;
}

Write-Host

foreach($i in $arr) {
    Write-Host "Fruit.. $i"
}

$i = 1;
# runs until condition becomes FALSE
do {
    Write-Host "Hi"
    $i++;
} while($i -ne 3); #run until i becomes 3, i.e total 2 times 'Hi'

$i = 1;
# runs until codition is TRUE
do {
    Write-Host "Hell";
    $i++;
} until($i -eq 3); # fails when i == 3