Attach variables

Question

I want to take two variables (in and in2) and put them together, for example:

in = 1;
in2 = 3;

pin = in.in2; // I want this to set pin to 13

The arduino IDE tells me that in is not a class, so what syntax would I use to accomplish this?

EDIT: I figured out a different way to do it, you can just take in. multiply it by 10 and then set pin to the sum of in plus in2

Answer 1

If your two variables are definitely integers then

pin = (in*10)+in2;

would work.

If not, read them into strings (maybe with in.toString(), language dependent) and just do

pin = int.parse(in.toString()+in2.toString());

(Although, again dependent on language, you may have to do something other than int.parse [in C# you should use int.TryParse() for example])