Ops, you are right:
The value of errno is zero at program startup, but is never set to
zero by any library function.
Quoting the specifications, fclose can change errno.
My point is still valid:
in case of error the function must return the error message related to the failure.
Not the error message of the fclose.
It could be different; if different it is useless to troubleshoot the real problem.
Thanks for your attention,
M
> fclose can change errno.. . also reset it to zero.
It cannot reset it. ISO C ensures this:
The value of errno is zero at program startup, but is never set to
zero by any library function.
-- Roberto
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