Ask user the roll no and then display the details of that student example name ,total marks

Question

https://www.sololearn.com/discuss/2540744/?ref=app

Answer 1

Where is your attempt?

Answer 2

Minimal effort question, minimal effort solution. I've added barebones example of how it might work, so you may be able to adapt it to your criteria. If you can't, post a question again with requirements and an attempt included.
https://code.sololearn.com/cQ86zA2ZJtXV/?ref=app