C: What is self referential structure and when is it use ?

Question

What is structure padding and how it is used at processor level?

Answer 1

A self referential structure is nothing but a structure pointer pointing to itself.
It is used to create data structures like linked lists, stacks, etc. Below is an example of this kind of structure:

struct struct_name
{
int a;
char b;
struct_name * pointer_name;  // This is structure pointer defined inside structure only.
};