>watz de meanin of malloc.h n alloc.h in c-programmin(both are different)?
Both are archaic and not recommended. malloc.h is the ancient header that got merged into stdlib.h. alloc.h is typically where one might find alloca.
>what is the difference between 1 pointer n 2 pointer in link list of stack?
>wat is the meanin of arrow mark pointer?
Structure membership through a pointer.