Mohsen Pahlevanzadeh wrote:
Dear all,
We are working on C code (not ++),So we must use free instead delete.
I have following code:
/////////////////////////////////
struct linked_list *p;
p->src="10.0.0.1";
free(p);
printf ("%s",p->srcip);
/////////I see in my output 10.0.0.1
My question: i drop p pinter, but see it's value, how i kill p with its
value?
Yours,
Mohsen
Hey
You use free if you have allocated it memory, so for example if you have
a struct like:
struct list {
void *data
struct list* next;
}
You would
struct list *mylist = malloc(sizeof(struct list));
then do your assignment mylist->data= ...
mylist->next = NULL;
Then you can free mylist
The thing a good practice with free is to:
free(mylist)
mylist= NULL;
To make sure it can't be referenced again. Hope that clears a little up
for you.
--Phil
