| 22. 33. 1. setvbuf |
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| Item | Value | | Header file | stdio.h | | Declaration | int setvbuf(FILE *stream, char *buf, int mode, size_t size); | | Return | returns zero on success, nonzero on failure. |
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Function sets the buffer for stream to be buffer, with a size of size. |
Possible values of mode are _IOFBF, _IONBF, and _IOLBF. |
- _IOFBF: full buffering.
- _IOLBF: line buffered.
- _IONBF: no buffering.
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#include <stdio.h>
int main ()
{
FILE *fp;
fp=fopen ("myfile.txt","w");
setvbuf ( fp , NULL , _IOFBF , 1024 );
// File operations here
fclose (fp);
return 0;
}
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