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C# C# Basics (Retired) Perfect Variable Scope

Dominick Bartenope
Dominick Bartenope
2,092 Points
Posted by Dominick Bartenope
Dominick Bartenope
2,092 Points

Not quite sure what I'm doing wrong

I declared input as a string variable and then declared the output variable in the main method but I don't understand why it is coming up as incorrect

Program.cs 
using System;

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

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

            Console.WriteLine(output);
        }
    }
}

3 Answers

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

A variable should only be declared once. It can be assigned many times, but in a plain assignment the name will not be preceded by the type.

Ben Reynolds
Ben Reynolds
35,170 Points
Ben Reynolds
Ben Reynolds
35,170 Points

Since you've declared "output" in Main and made it a string, you don't need to use "string" before the variable name in the if and else blocks. It thinks you're trying to declare a new variable called output in each of those lines but it already exists.

Dominick Bartenope
Dominick Bartenope
2,092 Points
Dominick Bartenope
Dominick Bartenope
2,092 Points

Thanks Steven, that helped me figure it out. Cheers!