How to know whether a running application has exited and based on that do something in C?

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How do i know that a process [not called by c] has exited and based on that do something in C?

For eg. there is a running application , say notepad. I create an application to delete the text file created by it. I cannot do that while it is open . So how do I know when notepad exits and based on that take a decision in C.,.,

asked 36 secs ago

nKiNG121

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