title: Convert string to char error message
body: <p>Cannot convert string to char error message. I am trying to be able to write a program that will, for example, allow the user to input 1800HIETHC and it will give them back all digits.
  I am already stuck.... Any help or advise on what to do?</p>
  
  <pre><code>    static void Main(string[] args)
      {
          char number = ' ';
          int numb = 0;
  
          Console.WriteLine("Please enter the telephone number...");
          number = Console.ReadLine();
  
          while (number &lt;= 10)
          {
  
              if (number == 'A')
              {
                  numb = 2;
              }
          }
  
          Console.WriteLine(numb);
      }
  }
  </code></pre>
  
  <p>}</p>