Pointers to Pointer Architecture with examples

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

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

*  -represent variable address&- represents base address.

Syntax:

Pointer: Datatype

*ptr; p2p: Datatype

** ppt; P2p2p: Datatype *** ppptr;  

{
inti;
int * ptr;
int ** pptr;
int ***pptr;
ptr=&ptr;
pptr=&pptr;
i=10;
}

• &i  500
• ptr  500
• i  10
• ptr 10
• &ptr  600
• pptr  600
• pptr 500
• **pptr  10

600  50010    

• &pptr  700
• ppptr  700
• *ppptr 600
• ** ppptr  500
• *** ppptr 10

  *(700)

  ↓

  *(600)

  ↓

  *(500)

  ↓

   10  

For an in-depth understanding of Pointers click on

• Types Of Pointers in C
• Dangling & Function pointers
• Pointers and their Rules in C Language
• Arguments in C
• Recursion in C