Wow! Rarely are so many misconceptions compressed into so few words.
-- There's no such thing as an "interger". The word is "integer", pronounced "IN-tih-jer".
It means "whole number" ... a number with no decimal or fraction, a number you say
when you count.
So "3.14" can't be an integer, because it has a decimal part, and that means
it's not a whole number ... it's "three and a piece".
-- "Undefined" is not the opposite of "integer". In fact, "integer" doesn't have an opposite,
because there are a lot of other things a number can be if it's not an integer.
-- "Undefined" means exactly what it says ... a numbery kind of thing that nobody
can actually say what it is, and you can't do arithmetic with it, like "infinity", or
something "divided by zero".
"3.14" is completely defined, and you can do any kind of arithmetic with it.
So the answer to the entire question is: "No."
3.14 is neither of those things.
Chat with our AI personalities