why it is not executing?? tell me the errors

Question

https://code.sololearn.com/cdgpP9bviBXf/?ref=app

Answer 1

https://code.sololearn.com/cfpdUv63qp1Z/?ref=app

Answer 2

First, add
import java.util.Scanner;

There is an error in 16 line.
You are using s then change S because your variable is lowercase.

Answer 3

Revise:
https://www.sololearn.com/learn/Java/2220/
Line 16 S=>s
import java.util.Scanner;
and then try and think