View source for The number of years should be between 0 and 5 but no validation takes place

<syntaxhighlight lang=csharp line>
static int GetHowLongToRun()
    {
      int Years = 0;
      Console.WriteLine("Welcome to the Plant Growing Simulation");
      Console.WriteLine();
      Console.WriteLine("You can step through the simulation a year at a time");
      Console.WriteLine("or run the simulation for 0 to 5 years");
      Console.WriteLine("How many years do you want the simulation to run?");
      Console.Write("Enter a number between 0 and 5, or -1 for stepping mode: ");

      while(true)
      {
          Years = Convert.ToInt32(Console.ReadLine());

          if (Years >= -1 && Years <= 5)
              break;           
          else
              Console.Write("You MUST Enter a number between 0 and 5, or -1 for stepping mode: ");
      }

      return Years;
    }
</syntaxhighlight>