SETBUF
Section: Standard I/O Functions (3S)
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NAME
setbuf - assign buffering to a stream
SYNOPSIS
#include <stdio.h>
setbuf(stream, buf)
FILE
*stream;
char *buf;
DESCRIPTION
Setbuf
is used after a stream has been opened but before it
is read or written.
It causes the character array
buf
to be used instead of an automatically allocated buffer.
If
buf
is the constant pointer
NULL,
input/output will be completely unbuffered.
A manifest constant
BUFSIZ
tells how big an array is needed:
char buf[BUFSIZ];
A buffer is normally obtained from
malloc(3)
upon the first
getc
or
putc(3)
on the file,
except that output streams directed to terminals,
and the standard error stream
stderr
are normally not buffered.
SEE ALSO
fopen(3), getc(3), putc(3), malloc(3)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- SEE ALSO
-
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