StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

PO
primarykey
Id
10903983
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2012-06-05T19:53:40.247
FavoriteCount
0
LastActivityDate
2012-06-05T19:53:40.247
LastEditDate
LastEditorUserId
0
OwnerUserId
1435561
ParentId
10903776
PostTypeId
2
Score
0
ViewCount
0
LastEditorDisplayName
text
Body
The "->" is meant to access an element in a structure that is dynamically allocated and "." is used to access an element in a structure that is statically allocated. Here is an example: <pre><code>typedef struct product_data product_data; struct product_data { int product_code; int product_size; product_data *next; }; product_data *products_head = NULL; product_data *products_tail = NULL; int main() { /* Allocate memory */ product_data *newproduct = malloc(sizeof(product_data)); int newcode = 5; int newsize = 5; products_head = newproduct; newproduct->product_size = newsize; newproduct->next = NULL; /* free memory */ free(product_data); return 0; } </code></pre> But remember that for all the new nodes that you make in the linked list you will have to allocate memory and free that memory. A good program to use to check that all the memory you allocated was free'd is valgrind. And if you run into logic errors trying to make the linked list draw it out by hand first like this: <pre><code> [head] [tail] | | V V [ a ] -> [ b ] -> null </code></pre> Just remember that head and tail are both pointers (so they do not need to be allocated memory, they just need to be POINTING at the node that you want. If you still run into problems because your logic gets very complicated I sugget you try and learn GDB (it is a command line debugger) it will help you step through your code so you can see what is happening step by step. That is how I first learnt to create data structure. Good Luck!
Tags
Title
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POMysterious segmentation fault while creating a Linked List (Add function)
 singulars
 PostTypePostTypeId
 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. This table or related slice is empty.
UserOwnerUserId
1. USbktz
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. This table or related slice is empty.
VotesPostIdCreationDate
1. This table or related slice is empty.
CommentsPostId
1. This table or related slice is empty.

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.