StackOverflow2013

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plurals

PO
primarykey
Id
12674201
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2012-10-01T13:24:35.093
FavoriteCount
0
LastActivityDate
2012-12-17T12:08:24.570
LastEditDate
2012-12-17T12:08:24.570
LastEditorUserId
596781
OwnerUserId
596781
ParentId
12674094
PostTypeId
2
Score
22
ViewCount
0
LastEditorDisplayName
text
Body
You got it slightly wrong: <code>moreThings</code> also decays to a pointer to the first element, but since it is an array of an array of chars, the first element is an "array of 8 chars". So the decayed pointer is of this type: <pre><code>char (*p)[8] = moreThings; </code></pre> The value of the pointer is of course the same as the value of <code>&moreThings[0][0]</code>, i.e. of the first element of the first element, and also the same of <code>&a</code>, but the type is a different one in each case. Here's an example if <code>char a[N][3]</code>: <pre><code>+===========================+===========================+==== |+--------+--------+-------+|+--------+--------+-------+| || a[0,0] | a[0,1] | a[0,2]||| a[1,0] | a[1,1] | a[1,2]|| ... |+--------+--------+-------+++--------+--------+-------++ ... | a[0] | a[1] | +===========================+===========================+==== a ^^^ ||+-- &a[0,0] |+-----&a[0] +-------&a </code></pre> <ul> <li><code>&a</code>: address of the entire array of arrays of chars, which is a <code>char[N][3]</code></li> <li><code>&a[0]</code>, same as <code>a</code>: address of the first element, which is itself a <code>char[3]</code></li> <li><code>&a[0][0]</code>: address of the first element of the first element, which is a <code>char</code></li> </ul> This demonstrates that different objects may have the same address, but if two objects have the same address and the same type, then they are the same object.
Tags
Title
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POArray to pointer decay and passing multidimensional arrays to functions
 singulars
 PostTypePostTypeId
 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USKerrek SB
UserOwnerUserId
1. USKerrek SB
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. POArray to pointer decay and passing multidimensional arrays to functions
 singulars
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 PTQuestion
PostsParentIdCreationDate
1. This table or related slice is empty.
VotesPostIdCreationDate
1. VO
 singulars
 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
2. VO
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 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
3. VO
 singulars
 PostPostId
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 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
CommentsPostId
1. This table or related slice is empty.

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