Hey guys I'm new. Im trying to do a calculator but I get errors what else do I need in my code

Question

https://code.sololearn.com/c669uUtsZkuk/?ref=app

Answer 1

It's working fine here.
Your input should be like this
+
4
3

Take a look at this lesson
https://code.sololearn.com/WhiNb9BkJUVC/?ref=app

Answer 2

Thanks guys

Answer 3

This program works Successful in my laptop in VS code

Answer 4

I dialogue Box first provide Operation Sign Then in next line provide first no.
and next line second no. same like @Simba Said