plus-ex.ps1

using namespace System
$r=[Random]::new()
$score = 0
while ($true) {
    $a = $r.Next(0,10)
    $b = $r.Next(0,10)
    $c = 0
    $answer = $a + $b
    if ([int]::TryParse((read-host $a "+" $b), [ref]$c) -and $c -eq $answer) {
        $score++
        echo ("정답. 점수=" + $score)
    } else {
        echo ("오답. 정답=" + $answer)
    }
}