Near Pointer

Near Pointer

(1) near pointer?
Ans:
It is 16 bit pointer.It can hold the address of variable only within 64KB data segment.It store only offset address of any variable.This offset address in cyclic in nature .

If you will increment the near pointer then offset address will reach maximum value FFFF (in hexadecimal) then 0000 and so on.
For example :
#include
void main()
{

int a=5,i;
int *ptr; //by default it is near pointer.
ptr=&a;
for(i=0;i<300;i++)

{

printf("\n %p",ptr);

p++;

delay(100);

}

}

Output :

Here int two byte data type so every time offset address is increasing by two. %p gives offset address in hexadecimal number. We can perform ++,-- ,+,- relation operator (>,<,==,….) operation on offset address. We cannot perform following task. Addition of two offset address. Multiplication and division of two offset address or one offset address and another number.