Programming

Originally Posted by otheus

"out of bounds" means "invalid memory address". You avoid it by properly mallocing memory before using it.

I hate to say this, but you seem very confused about pointers. I think you need to read a very concise summary on C pointers.

In the code you provide, you are trying to assign values to the address...

Code:

node->des = 0;

You should instead be doing:

Code:

*(node->des) = 0;
 
This correction is good. I losed stars when posted.

And your loop should be:

Code:

while ( *(  tr->root->is_done ) ) {
... 
}
 
At this situation, segfaults still happen

Also, root itself is a pointer. So you first need to allocate it:

Code:

tr->root = malloc(sizeof(struct node_t));
tr->root->hood = malloc(sizeof(double*));

"tr" is also a pointer, and this needs to be allocated too, but I have no idea what kind of structure it is.


Also, this structure is very unusual. I cannot imagine why you want every element to be a pointer to something!

What's more, I think this is really a topic worth discusssion.