welll
as i know the null pointer is pointing to the null value means
you shuold use in the implemetation of linked list....
A null pointer is a regular pointer of any pointer type which has a special
value that indicates that it is not pointing to any valid reference or memory
address. This value is the result of type-casting the integer value zero to any
pointer type.
The void type of pointer is a special type of pointer. In C++, void represents
the absence of type, so void pointers are pointers that point to a value that
has no type (and thus also an undetermined length and undetermined dereference
properties).
This allows void pointers to point to any data type, from an integer value or a
float to a string of characters. But in exchange they have a great limitation:
the data pointed by them cannot be directly dereferenced (which is logical,
since we have no type to dereference to), and for that reason we will always
have to cast the address in the void pointer to some other pointer type that
points to a concrete data type before dereferencing it.
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