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C# C# Basics (Retired) Perfect Variable Scope

Posted by Tiago Ramos
Tiago Ramos
2,380 Points

writting output variable

Hi,

I know that if I declare a variable within curly braces {} it exists only inside them so I called WriteLine(output) inside braces{} as well.

I didn't erased the output variable. I can't see what's my mistake.

Can you help please? Thank you :)

Program.cs 
using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        static void Main()
        {

            string input = Console.ReadLine();


            if (input == "quit")
            {
                string output = "Goodbye.";
                Console.WriteLine(output);

            }
            else
            {
                string output = "You entered " + input + ".";
                Console.WriteLine(output);
            }



        }
    }
}

2 Answers

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

This might be considered changing "the intent or intended behavior of the code". But you have the right idea about the scope of "output".

Perhaps a better fix would be to just declare it in the same scope as the "WriteLine" statement.

Tiago Ramos
Tiago Ramos
2,380 Points

Thanks for the tip Steven, you mean like this?

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

I tried but it didn't work

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

I was suggesting that you might leave the "WriteLine" statement as it was supplied, but declare "output" before the conditional, and then in the conditional blocks do an ordinary assignment instead of an initialization.

Joe Nguyen
Joe Nguyen
25,189 Points
Joe Nguyen
Joe Nguyen
25,189 Points

using System;

namespace Treehouse.CodeChallenges { class Program { static void Main() {
string input = Console.ReadLine(); string output = ""; if (input == "quit") { output = "Goodbye."; } else { output = "You entered " + input + "."; }

        Console.WriteLine(output);
    }
}

}

This worked for me