Chain of Pointers



Chain of pointers:

It is possible to make a pointer to point to another pointer, thus creating a chain of pointers.

chain of pointers
 
Here, the pointer variable p2 contains the add of the pointer variable P1, which points to the location that contains the desired value. This is known as multiple indirection's.

A variable that is a pointer to a pointer must be declared using additional indirection operator symbols in front of the name.

Ex:–  int **p2;

This declaration tells the compiler that p2 is a pointer to a pointer of int type.

Ex:–
#include
main()
{
Int x, *p1, **p2;
x=100;
p1=&x;
p2=&p1;
printf(“%d”, **p2);
}

This code will display the value 100. Here, P1 is declared as a pointer to an integer & p2 as a declared as a pointer to an integer & p2 as a pointer to a pointer to an integer.

Related

C Language 160523530380115935

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