If i write exit() in child process then what happens to the main parent process?

Question

Same question for Thread also..
If i use exit system call in thread then what happens to the main process?

Answer 1

If child process exits then there is no impact on the parent and if parent exits then child process becomes 'orphaned' (i.e. its parent becomes init - PID 1).

In case of thread their is no parent child relationship for example if thread A creates thread B and then thread A terminates, then thread B will continue to execute. [The exception to this is when the main thread (that is, the thread that runs the main() function) terminates. When this happens, the process terminates and all other threads stop.]

Comments

Thats right sir.. but my qustion is if i use exit() system call in child process then it will come out only from child process or from main process also?

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only child process :)