arduino - I can't find out variable type

Question

Closed. This question needs details or clarity. It is not currently accepting answers. question from:https://stackoverflow.com/questions/65926261/i-cant-find-out-variable-type

Answer 1

152 % 10 is 2. 2 is STX (start of text). That's a control character which is non-printing.

https://en.wikipedia.org/wiki/Control_character

The start of text character (STX) marked the end of the header, and the start of the textual part of a stream.