Why is this C# code kicking up an error?
<p>real newbie question but why doesn't this work? I am getting </p>

<blockquote>
  <p>use of unassigned variable
  'comparison'</p>
</blockquote>

<p>as the error</p>

<pre><code>        string comparison;
        Console.WriteLine("Enter the first number");
        int firstNum = Convert.ToInt32(Console.ReadLine());
        Console.WriteLine("Enter the second number");
        int secondNum = Convert.ToInt32(Console.ReadLine());
        if (firstNum == secondNum)
            comparison = "equals to";
        if (firstNum &lt; secondNum)
            comparison = "less than";
        if (firstNum &gt; secondNum)
            comparison = "greater than";
        Console.WriteLine("{0}",comparison);
</code></pre>
