wait(null) and wait(&status) C language and Status

If you call wait(NULL) (wait(2)), you only wait for any child to terminate. With wait(&status) you wait for a child to terminate but you want to know some information about it’s termination.

You can know if the child terminate normally with WIFEXITED(status) for example.

status contains information about processes that you can check with some already defined MACRO.

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