clearerr
From cppreference.com
| Defined in header <stdio.h>
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void clearerr( FILE *stream );
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Resets the error flags and the EOF indicator for the given file stream.
Parameters
| stream | - | the file to reset the error flags for |
Return value
(none)
Example
Run this code
#include <stdio.h>
#include <assert.h>
int main(void)
{
FILE* tmpf = tmpfile();
fputs("cppreference.com\n", tmpf);
rewind(tmpf);
for (int ch; (ch = fgetc(tmpf)) != EOF; putchar(ch)) { }
assert(feof(tmpf)); // the loop is expected to terminate by EOF
puts("End of file reached");
clearerr(tmpf); // clear EOF
puts(feof(tmpf) ? "EOF indicator set"
: "EOF indicator cleared");
}
Output:
cppreference.com
End of file reached
EOF indicator cleared
References
- C17 standard (ISO/IEC 9899:2018):
- 7.21.10.1 The clearerr function (p: 246)
- C11 standard (ISO/IEC 9899:2011):
- 7.21.10.1 The clearerr function (p: 338)
- C99 standard (ISO/IEC 9899:1999):
- 7.19.10.1 The clearerr function (p: 304)
- C89/C90 standard (ISO/IEC 9899:1990):
- 4.9.10.1 The clearerr function
See also
| checks for the end-of-file (function) | |
| displays a character string corresponding of the current error to stderr (function) | |
| checks for a file error (function) | |
C++ documentation for clearerr
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