CFD Online Discussion Forums - How to Extract neighbors?

Hi all,

I am new to this forum as well as fluent programming. I am working on single phase flow and need to extract neighbors of each cells through udf and store it in data file. Please lead me.
In this code I want loop over entire cells.

Code:

#include "udf.h"

#include "mem.h"

#include "sg.h"



DEFINE_ON_DEMAND(neighbors)

{

        Domain *d;

        cell_t c;

        Thread *t;

        

        int c0;

        int c1;

        

        thread_loop_c(t,d)

        {

                begin_c_loop(c,t)

                {

                        F_C0(c,t)=c0;

                        F_C1(c,t)=c1;

                        C_UDMI(c,t,1)=c0;

                        C_UDMI(c,t,2)=c1;

                        

                }

                end_c_loop(c,t)

        }

}

Thanks in advance