Answer 1

Satnam Singh not sure what you are after. Are you looking for something like this?
https://code.sololearn.com/WwCPr427zPjD

Answer 2

It depends on what page and how you're accessing SoloLearn. If you are using a browser and you want a link to a C lesson, it will not work. However, posting a comment to a lesson, course, or code, posting an activity feed post, or posting a Q&A post has an circle/plus icon that allows including a code or Q&A post. In all places that support sharing, you can copy a link to the clipboard. These can be pasted everywhere.

Answer 3

You mean using multiple html pages in web playground?

Answer 4

https://code.sololearn.com/WOShWNar56TK