What is perfect number

Hello sir,
I am new one in c.
What is perfect number.

I need definition.

I need simple example
Thank u sir

You need Google.
You need Wikipedia.

Ok edit I read up on the links....why would you ask a strict math question on a programming forums. I would assume that sure there people who could know the answer but you only going to get a link or a blunt answer if your looking for something ask a college professor/math teacher. Its one thing to just read a link and copy 6 (according to what I read quickly it is) but what is a perfect number...I have no idea and due to the fact your asking the question about it you probly dont know ether. So that brings me to the question as to why you want a perfect number/how could you know you needed it if you didnt know what it was. Perfect numbers are on the math side of things and has nothing specificly to do with C.

You also need Google
You also need Wikipedia

Um, KoG Metalgod, there are TONS of CS classes that have an assignment writing a function that tells if a number is perfect or not. Measured by weight, not volume.

I was actually wondering if there was something like a perfect question.

I know this question wasn't anywhere near that category.