Why error?

Question

https://code.sololearn.com/c6gJIS51j6fQ/?ref=app

Answer 1

A char is this 1 but not this 13. Only one character.

Answer 2

Алексей Болдырев

Because char contains only one character but here is 2 character.

Answer 3

'1' and '3' are both one character. When you have more than one, it's considered a string (or an array of characters)

try the same code with just a single character, either '1' or '3'

Answer 4

Thanks! I am understand! All the best! 😁