Can my Canon Lenses fit my Nikon?

I'm getting a Nikon D3100 14.2MP Digital SLR Camera and I have two zoom Lenses one is 75-300mm and the other is 35-80mm will they fit my Nikon.

Added (1). Sdf? What is that?

Added (2). Well I got the lenses for free so I'm not complaining, how much is an adapter?

The mounts are incompatible

You could buy an adapter, but those two lenses are complete garbage anyway… And would be made worse with an adapter.

Those two lenses as stated, don't belong to their top of the line collection. Just start fresh with Nikon lenses.

No, they won't fit outright. You could find an adapter to make them work but that would force you to shoot in full manual mode without the benefit of using a lightmeter.

No, not even reliably with an adapter. Since these are rather poor lenses I'd just sell them and invest in nikon lenses.

No.

The design of the two systems precludes the use of Canon lenses on Nikon's

My recommendation to you is to get a Cannon lens for your Cannon camera.

They don't even match. It is like eating an apple and a pear. It may be considered "fruit" but it is two different types of fruit.