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C# C# Basics (Retired) Perfect Variable Scope

Bummer! i have an error

I do not understand this! can please someone give me the answer because i have already asked this question 2 times..

Program.cs
using System;

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

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

            Console.WriteLine(output);
        }
    }
}

2 Answers

Jennifer Nordell
seal-mask
STAFF
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there! The problem lies in your declaration of the output variable. The Console.ReadLine() returns a string from what the user inputs. But the Console.WriteLine() returns nothing. Remember, it's simply for printing something back to the user. The compiler can't handle this because it's returning type void back and trying to assign that to a variable that's supposed to hold a string.

You have this:

 string output = Console.WriteLine();

But that should be:

 string output;

This line declares a string named output. Later on, we'll change the value of that variable based on what the input value is, and that part is all correct.

Hope this helps! :sparkles:

[MOD: added c# formatting -cf]

Chris Freeman
Chris Freeman
Treehouse Moderator 68,441 Points

Though the challenge instructions say Declare the output variable just before the if statement and assign it to an empty string (i.e. ""), both the following are acceptable answers:

string output;
// or 
string output = "";

Thanks guys!