Why c# and java have just console in sololearn?

Question

you could write visual programming with html or php in sololearn. I wrote some visual programming with c# in computer but I can not do here. Sololearn has just console.
why ? what is the different ?
thank you for your answers.

Answer 1

Well SoloLearn (Playground) is where u learn code basics. Console is the easiest and good starting point. They are simply compiling your code and show the results.
When come to Windows Form application it need more resources (CPU, Memory, .NET Services, UI components, Framework​ Libraries, more files...) Simply u will a need an IDE (Visual Studio) to manage all of this.Code Playground is not an IDE but simple Code Editor (single file).

For HTML all u need is a web browser.
In PHP all ur UI markup is in HTML and PHP script is interpreted​ in Server.I believe SoloLearn doing these (compiling/interpreting) in their end(server) but for Windows forms everything should be done from the running device itself.
Similar story for Java GUI applications.