Question

Is there a neither A nor B syntax?

Answer 1

While there isn’t a built-in syntax to do this, I’d suggest you take a look at the list of supported logical operators and then carefully study De Morgan’s laws. Sufficient knowledge in these two fields will allow you to write any logical statement in if–else if syntax.

EDIT: To completely answer your question (although this has been done already in other answers), you could write a neither–nor statement like this:

if (!A && !B) { DoStuff(); }