clearerr - cppreference.com (original) (raw)
Resets the error flags and the EOF indicator for the given file stream.
[edit] Parameters
| stream | - | the file to reset the error flags for |
|---|
[edit] Return value
(none)
[edit] Example
#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
[edit] 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