Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

C# C# Basics (Retired) Console I/O Formatting Output

concatenation

can someone help please

CodeChallenge.cs
string firstName=Console.ReadLine();

Console.WriteLine(firstName + rocks);

1 Answer

Seth Kroger
Seth Kroger
56,407 Points

The challenge asks you to put two strings together. Without the quotation marks rocks is considered a variable name, but not variable named rocks exists here. Putting quotation marks around it makes it a string. firstName + " rocks!"