Why doesn’t this deciphering code work?

Question

I am tring to write a caesar cipher decoder, however it messes up some letters. I think there is a problem with if (number < 1 && number > -26) but I don’t know exactly what it is.
Test the decipher here:
https://code.sololearn.com/WtZSFo5aYyvq/?ref=app
Test the cipher here:
https://code.sololearn.com/W3WONkkVt0t1/?ref=app

Answer 1

From a cursory look, you have missed out the letter 'v' in your if statements. Also you have "p" when you mean "o".

Answer 2

Place them outside of the form.
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