Where did I go wrong here in getting user input?

Question

https://code.sololearn.com/cuVRmmM8NMJt/?ref=app

Answer 1

Jazz That was really helpful! Thanks man!!

Answer 2

Jazz thanks but how can I use this in my program? When I tried it I'm not able to get user input
https://code.sololearn.com/cuVRmmM8NMJt/?ref=app

And what about other datatypes? How can I get String, double using this method?