Re : [LI] free...

[Mahendra M <karmah@xxxxxxxxxxxxxxxxxxx>]

Hi,
	Arun K Desai wrote:

>What "free" does???Suppose i am having a pointer say *ptr.
>If say free(ptr) what it does???
>If say  ptr=NULL what it does???
>Is it both are same????

free : frees  the  memory  space pointed to by ptr, which
must have been returned by a previous  call  to  malloc(),
calloc()  or  realloc().   Otherwise,  or if free(ptr) has
already been called before,  undefined  behaviour  occurs.
If ptr is NULL, no operation is performed.

-Mahendra M
RV College of Engineering, B'lore.
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