Arvind - your code is still unreadable. Please format your code so we can read it without going crazy. I would suggest that in re-formatting your code that you look carefully at how it works. What you want to do is TOGGLE the led on and off. Think about how you could write your code better so that you can determine easily where the problem is. Separate the code into blocks and check the operation of each block. You should be able to find the problem easily.

Where do you think the problem is?