File Position Errors

ANSI 4.9.9.1, 4.9.9.4 The value to which the macro errno is set by the fgetpos or ftell function on failure

When fgetpos or ftell fails, errno is set to the manifest constant EINVAL if the position is invalid or EBADF if the file number is bad. The constants are defined in ERRNO.H.

See also

Library Functions