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Include Pagecss.POSIX API.csscss.POSIX API.css Include Pagecss.webworks.csscss.webworks.css Anchor10467191046719 Diagnosing a File Error Anchor10467201046720The file maintains flags that reflect errors encountered in the previous file access, and subsequent accesses will fail (under certain conditions outlined here) unless these flags are explicitly cleared (using fs_clearerr()). There are actually two sets of flags. One reflects whether the file encountered the end-of-file (EOF) during the previous access, and if this is set, writes will not fail, but reads will fail. The other reflects device errors, and no subsequent file access will succeed (except file close) unless this is first cleared. The functions fs_ferror() and fs_feof() can be used to get the state of device error and EOF conditions, respectively.