title: Purpose of [Char[]] in PowerShell
body: <p>What is the basic purpose of [char[]] in PowerShell. Is it parsing to char array  ? 
  For example : </p>
  
  <pre><code>$random = Get-Random -Minimum 0 -Maximum 5;
  $names="America","Iran","Poland","Cat","PowerShell";
  $targetWord = $names[$random];
  [Char[]]$wordProgress =  "_" * $targetWord.Length
  </code></pre>