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C# C# Basics (Retired) Perfect Variable Scope

Posted by Diana Anderson
Diana Anderson
510 Points

Confused

I am not sure what exactly needs to be done.

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);
        }
    }
}

2 Answers

Geovanie Alvarez
Geovanie Alvarez
21,500 Points
Geovanie Alvarez
Geovanie Alvarez
21,500 Points

You need to declare the variable input and output

using System;

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

            string input = Console.ReadLine(); // declare the variable
            string output = ""; // declare the variable

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

            Console.WriteLine(output);
        }
    }
}
bothxp
bothxp
16,510 Points

Yes, this task is all about declaring the variables and doing so in such a way that they are in scope when you use them.

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

There are actually three issues, requiring a minimum of four changes:

  • the variable input must be declared when (or before) it is assigned
  • the variable output must be declared in the widest scope it is used (*Main()" in this case)
  • inside the test blocks, output should be assigned but not declared

Geovanie's code is a complete solution, so you can see all these items fixed in it.