Pointers to Pointer Architecture with examples

Pointer to pointer:  It is a concept of holding an address of pointer variable in to another variable.

• Pointer to pointer relations can be applied up to 12 stages but generally there is no any limitation.
• When we are increasing the pointer to pointer relations, then performance will be decreased.

Syntax:

Pointer: Datatype *ptr;

p2p: Datatype ** ppt;

P2p2p: Datatype *** ppptr;

void main()

{

inti;

int * ptr;

int ** pptr;

int ***pptr;

ptr=&ptr;

pptr=&pptr;

i=10;

}

1. &i  500
2. ptr  500
3. i  10
4. ptr 10
5. &ptr  600
6. pptr  600
7. pptr 500
8. **pptr  10

600  50010

1. &pptr  700
2. ppptr  700
3. *ppptr 600
4. ** ppptr  500
5. *** ppptr 10

*(700)

      ↓

*(600)

      ↓

*(500)

      ↓

10