Himanshu Pandey wrote:

If you could please answer the following 3 questions, it would be of great help:

What helps more is to read the code. I'm sorry, but this list isn't the palce to learn C programming. Anyone familiar with C programming should be able to read the code, and understand what it's doing. If you're just trying to understand the code for fun, you need to figure it out yourself. If you're doing it because you need to write some patches, describe the goal, and ask how to implement it. Alan DeKok.