title: C# how to pass unknown value variable ( user input ) to return method
body: <p>Good Morning/Afternoon,</p>
  
  <p>I'm would love some clarification on passing by reference and value. The program being posted works if I set the variable value to "0" but does not override after user input. So I believe the issue is passing, however my professor said everything should be static in this program. </p>
  
  <p><strong>Short: How to pass an input variable without the use of void?</strong></p>
  
  <p>I am very new. This is only chapter 3 so any assistance would be wonderful.</p>
  
  <pre><code>namespace Lesson3
  {
  
  class Program
  {
      public static void Main(string[] args)
      {
  
  
  
  
          // declarations 
          // 12 inches to a foot
          // 36 inches to a yard
          // 63360 inches per 1 mile
          double userInput= 0; // if "0" is removed the program will not function CS0165 error
          double feet = 12;
          double yards = 36;
          double miles = 63360;
          double ansFeet = userDivFeet(ref feet, ref userInput);
          double ansYards = userDivYards(ref yards, ref userInput);
          double ansMiles = userDivMiles(ref miles, ref userInput);
  
  
          Console.WriteLine("Please enter the number of inches to convert: ");
          userInput = Convert.ToInt32(Console.ReadLine());
  
          // output each calculation and display with console to hold the results
          WriteLine(userInput + " inches converts into " + ansFeet + " feet.");
          WriteLine(userInput + " inches converts into " + ansYards + " yards.");
          WriteLine(userInput + " inches converts into " + ansMiles + " miles.");
          Console.ReadKey();
      }
  
  
          public static double userDivFeet(ref double userInput, ref double feet)
      {
          return userInput / feet;
      }
      public static double userDivYards(ref double userInput, ref double yards)
      {
          return userInput / yards;
      }
      public static double userDivMiles(ref double userInput, ref double miles)
  
      {
          return userInput / miles;
      }
  
  
  
  
      }
  </code></pre>
  
  <p>}</p>