I don't know how to solve the error, Convert?

Question

https://code.sololearn.com/c54w1LlxzBpI/?ref=app

Answer 1

Use Int32.Parse() and take the input as the argument to convert.

Answer 2

Do you know why there is an error in the output?

https://code.sololearn.com/c54w1LlxzBpI/?ref=app