Format
#include <stdio.h>
void clearerr (FILE *stream);
Language Level: ANSI
Threadsafe: Yes.
Description
The clearerr() function resets the error indicator and end-of-file indicator for the specified stream. Once set, the indicators for a specified stream remain set until your program calls the clearerr() function or the rewind() function. The fseek() function also clears the end-of-file indicator. The ILE C/C++ runtime environment does not automatically clear error or end of file indicators.
Return Value
There is no return value.
The value of errno can be set to:
Example that uses clearerr()
This example reads a data stream, and then checks that a read error has not occurred.
#include <stdio.h>
#include <stdlib.h>
FILE *stream;
int c;
int main(void)
{
if ((stream = fopen("mylib/myfile", "r")) != NULL)
{
if ((c=getc(stream)) == EOF)
{
if (ferror(stream))
{
perror("Read error");
clearerr(stream);
}
}
}
else
exit(0);
}
Related Information