GfG QA is closing soon... Please refer PRACTICE or GfG now on wards !!

why we are using pointer to pointer variable instead of pointer variable in linked list

as i saw for adding any node before or end of node we are using pointer to pointer variable ..yes i know it is used for storing the address of pointer ..but what will be the effect on program when we will use pointer variable rather than pointer to pointer variable . i didn't understood very well. plss explain it with diagram .. 

asked Jul 16, 2016 by Annu Verma 1
...