title: Invalid token '(' in class, struct, or interface member declaration
body: <pre><code>        usersIncome = InputOutput.DisplayTaxDue(double userIncome, double taxDue, double taxRate, double flatRate);
          Console.WriteLine(" Your income is : {0:C} ", usersIncome );
          Console.WriteLine(" Your tax due is : {0:C} ", taxDue);    
          Console.WriteLine(" Your income is : {0} ", taxRate );
          Console.WriteLine(" Flat Rate is : {0} ",  flatRate);
  </code></pre>
  
  <p>I am getting invalid token after every open and closing parenthesis.</p>