Playground

C# playground

How the sandbox works, and its honest limits, is on the code execution and security page.

Roslyn 4.14.0 compiling for .NET 10.0.12 (Mono WebAssembly, interpreted)

Ctrl/Cmd+Enter to run

Press Esc then Tab to move keyboard focus out of the code editor.

stdin (one value per line, read by Console.ReadLine())

Ready

Output will appear here after you run your code.

Not sure what to type?

A blank editor is the hard place to start. The C# exercises hand you a program that already runs and ask you to change one thing.