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C# C# Basics (Retired) Perfect Variable Scope

Andre' B.
Andre' B.
317 Points
Posted by Andre' B.
Andre' B.
317 Points

I'm not sure what to do here? I've tried all my methods and ideas to break down the question.

I'm almost positive to solve this requires the catch(FormatException) code, but I'm not for sure if that's correct? I've tried everything I've learned and still come up short. I need help!?

Program.cs 
using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        static void Main()
        {            
            input = Console.ReadLine();

            if (input == "quit")
            {
                string output = "Goodbye.";
            }
            else
            {
                string output = "You entered " + input + ".";
            }

            Console.WriteLine(output);
        }
    }
}

1 Answer

Chris Stowe
Chris Stowe
2,450 Points
Chris Stowe
Chris Stowe
2,450 Points

You will not need to use exception handling to solve this challenge. Pay close attention to the input and output variables.

Here are a couple of hints:

  • Check the type of the input variable (what type is it?)
  • Check the scope of the output variable (can the "Console.WriteLine(output);" statement use the output variable?)

Checkout this example on scope:

{
  {
    string hello = "hi there!";
  }

  // The variable hello cannot be used here.
}

This can be fixed by doing something like this:

{
  string hello;
  {
    hello = "hi there!";
  }

  // The variable hello can now be used here.
}