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#include <stdio.h>void clearerr(FILE *stream);
The clearerr( ) function resets (i.e., sets to zero) the error flag associated with the stream pointed to by stream. The end-of-file indicator is also reset.
The error flags for each stream are initially set to zero by a successful call to fopen( ). File errors can occur for a wide variety of reasons, many of which are system dependent. The exact nature of the error can be determined by calling perror( ), which displays a message describing the error. See perror( ).
Related functions are feof( ), ferror( ), and perror( ).
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