Help!

Question

What are wrong??
https://code.sololearn.com/cttLK53h4KFi/?ref=app

Answer 1

1.You need to remove private from all variables in methods.
2. Int c is declared in one method and used in other, this will not work. It's need to be declared on the level of class.
3. If more errors occurs ping me, will take a look. ;)

Answer 2

sin salida just means try again later.
The remote server cannot process the code at that moment.

Use Calc.data () and static
or
obj.data () and no static keyword

be aware that if you make it static it does belong to the class and not to instance

Answer 3

I was changed the errors, but the console say"sin salida" :(