Exit functions in C

Question

What is the difference between exit(), _exit() and _Exit() in C?

How do I decide which to use?

On bash, <

Answer 1

1.exit() : it's cleanup the work like closing file descriptor, file stream and so on, 2._exit() : it's not cleanup the work like closing the file descriptor,file stream and so on

These are the major difference of exit() and _exit().

am i rectified ur answer