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NULL, NULL

s2pid_one	15 Oct, 2007 - 06:20 AM Post #1
New D.I.C Head Joined: 15 Oct, 2007 Posts: 1 My Contributions	can anybody explain to me nicely wat is a NULL and wats d use of it,, please.. thanks......
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no2pencil	RE: NULL 15 Oct, 2007 - 06:21 AM Post #2
My fridge be runnin OH NOEZ! Joined: 10 May, 2007 Posts: 6,441 Thanked: 64 times Dream Kudos: 2425 Expert In: Goofing Off My Contributions	Null is the absence of a value. It isn't zero, zero is a value.
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NickDMax	RE: NULL 15 Oct, 2007 - 12:13 PM Post #3
2B\|\|!2B Joined: 18 Feb, 2007 Posts: 2,858 Thanked: 49 times Dream Kudos: 550 My Contributions	Well... null does mean "non-value". Generally with C we mean a null pointer. a null pointer is one that does not point to a valid location (well it really means "points to no location" as there are lots of pointers that point to invalid locations that are not null). A null pointer generally points to address 0 or 0:0 in segmented memory. null is often used to mean "Not initialized" (though you should NEVER assume that your compiler nulls out uninitialized pointer values).
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