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Can I assume uninitialized variable's value to be nil or 0?

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Can I assume uninitialized variable's value to be nil or 0?

Subject: Can I assume uninitialized variable's value to be nil or 0?
From: Eric <email@hidden>
Date: Wed, 17 May 2006 20:04:04 -0700

Can I assume declared but uninitialized variable to have the value of nil
(for pointer type) or 0 (for numeric type)?  Coming from Java, I was used to
make those assumptions.  I'm wondering whether it's the same for Objective-C
/ C.

Thanks,
Eric
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