clearerr
Visual Studio .NET 2003
Resets the error indicator for a stream.
void clearerr( FILE *stream );
Parameter
- stream
- Pointer to FILE structure.
Remarks
The clearerr function resets the error indicator and end-of-file indicator for stream. Error indicators are not automatically cleared; once the error indicator for a specified stream is set, operations on that stream continue to return an error value until clearerr, fseek, fsetpos, or rewind is called.
Requirements
| Routine | Required header | Compatibility |
|---|---|---|
| clearerr | <stdio.h> | ANSI, Win 98, Win Me, Win NT, Win 2000, Win XP |
For additional compatibility information, see Compatibility in the Introduction.
Libraries
All versions of the C run-time libraries.
Example
// crt_clearerr.c
/* This program creates an error
* on the standard input stream, then clears
* it so that future reads won't fail.
*/
#include <stdio.h>
int main( void )
{
int c;
/* Create an error by writing to standard input. */
putc( 'c', stdin );
if( ferror( stdin ) )
{
perror( "Write error" );
clearerr( stdin );
}
/* See if read causes an error. */
printf( "Will input cause an error? " );
c = getc( stdin );
if( ferror( stdin ) )
{
perror( "Read error" );
clearerr( stdin );
}
}
Input
n
Sample Output
Write error: No error Will input cause an error? n
See Also
Error Handling Routines | Stream I/O Routines | _eof | feof | ferror | perror | Run-Time Routines and .NET Framework Equivalents
