What is the difference between these two sentences
I have few friends.
I have a few friends.
Does the first sentences mean that I do not have any friend?
Please define the usage of these two words in detail.
I have few friends => you have not many friends (eg. you're not popular; people usually have more friends than you)
I have a few friends => you have some friends (nothing out of the way; you just say you have several friends).
I have quite a few friends => you have a lot of friends.