Error Handling

~~~~~~~~~~~~~~

How is error reporting different for the pthread library functions when

compared to the C library functions we've learned in the past?

$-()$ The pthread functions return $0$ on error and $-1$ on success, the opposite

of what we've seen before.

$-()$ The pthread functions don't set 'errno', so we have no way of reporting

the underlying reason for the failure as we did with 'perror$()\text{'}$ before.

$-()$ The pthread functions don't set 'errno', so we use 'strerror$()\text{'}$ on the

returned value to report the underlying cause of a failure.

$-()$ Trick question: Error reporting is the same as usual for the pthread

library questions.