How many days it can take to learn c programming perfectly?

Answer 1

It's really not about counting days to reach a particular goal. Also, you can't force yourself to accomplish such a demanding goal within a fixed time span. Rather it should be gradually built up in you. You need to get a good understanding of what you are doing and it takes time — unspecified times. So set aside those thoughts for now and focus on simple and manageable tasks like mastering one chapter of your textbook by doing all exercises at the end of the chapter. That way you're going slowly, there again, steady. But it guarantees that you absorb everything you need to know to become a good programmer.

Answer 2

All of them and more