Why when adding two variables does it gives you a different wired number

Question

variable

Answer 1

Let me guess. You added 2 huge numbers and got a negative number?
Don't freak out, you just went over the limit of the datatype. It's called overflow.
It even made ghandi super made.

Answer 2

Be specific! Post the code that is giving you a "weird" result. Otherwise we won't be able to help you.