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.
Contents |
[edit] Parameters
| stream | - | the file to reset the error flags for |
[edit] Return value
(none)
[edit] Example
Run this code
#include <stdio.h> #include <stdlib.h> #include <assert.h> int main(void) { FILE* tmpf = tmpfile(); fputs("abcde\n", tmpf); rewind(tmpf); int ch; while ((ch=fgetc(tmpf)) != EOF) printf("%c", ch); assert(feof(tmpf)); // the loop is expected to terminate by eof puts("End of file reached"); clearerr(tmpf); // clear eof if (feof(tmpf)) puts("EOF indicator set"); else puts("EOF indicator cleared\n"); }
Output:
abcde End of file reached EOF indicator cleared
[edit] References
- C11 standard (ISO/IEC 9899:2011):
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- 7.21.10.1 The clearerr function (p: 338)
- C99 standard (ISO/IEC 9899:1999):
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- 7.19.10.1 The clearerr function (p: 304)
- C89/C90 standard (ISO/IEC 9899:1990):
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- 4.9.10.1 The clearerr function
[edit] See also
| checks for the end-of-file (function) |
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| displays a character string corresponding of the current error to stderr (function) |
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| checks for a file error (function) |
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C++ documentation for clearerr
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