FFLUSH(3) BSD Library Functions Manual FFLUSH(3)NAME
fflush, fpurge -- flush a stream
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdio.h>
int
fflush(FILE *stream);
int
fpurge(FILE *stream);
DESCRIPTION
The function fflush() forces a write of all buffered data for the given output or update stream via the stream's underlying write function.
The open status of the stream is unaffected.
If the stream argument is NULL, fflush() flushes all open output streams.
The function fpurge() erases any input or output buffered in the given stream. For output streams this discards any unwritten output. For
input streams this discards any input read from the underlying object but not yet obtained via getc(3); this includes any text pushed back
via ungetc(3).
RETURN VALUES
Upon successful completion 0 is returned. Otherwise, EOF is returned and the global variable errno is set to indicate the error.
ERRORS
[EBADF] The stream argument is not an open stream, or, in the case of fflush(), not a stream open for writing.
The function fflush() may also fail and set errno for any of the errors specified for the routine write(2).
SEE ALSO write(2), fclose(3), fopen(3), setbuf(3)STANDARDS
The fflush() function conforms to ISO/IEC 9899:1990 (``ISO C90'').
BSD June 4, 1993 BSD
Check Out this Related Man Page
FFLUSH(3) BSD Library Functions Manual FFLUSH(3)NAME
fflush, fpurge -- flush a stream
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdio.h>
int
fflush(FILE *stream);
int
fpurge(FILE *stream);
DESCRIPTION
The function fflush() forces a write of all buffered data for the given output or update stream via the stream's underlying write function.
The open status of the stream is unaffected.
If the stream argument is NULL, fflush() flushes all open output streams.
The function fpurge() erases any input or output buffered in the given stream. For output streams this discards any unwritten output. For
input streams this discards any input read from the underlying object but not yet obtained via getc(3); this includes any text pushed back
via ungetc(3).
RETURN VALUES
Upon successful completion 0 is returned. Otherwise, EOF is returned and the global variable errno is set to indicate the error.
ERRORS
[EBADF] The stream argument is not an open stream, or, in the case of fflush(), not a stream open for writing.
The function fflush() may also fail and set errno for any of the errors specified for the routine write(2).
SEE ALSO write(2), fclose(3), fopen(3), setbuf(3)STANDARDS
The fflush() function conforms to ISO/IEC 9899:1990 (``ISO C90'').
BSD June 4, 1993 BSD
hi everybody,
when i run and compile this:
printf("test"); fflush(stdout);
nothing appears on screen.
if i try this:
___________________________________
printf("test"); fflush(stdout); sleep(10);
___________________________________
then i can see the output "test"... for 10... (4 Replies)
I have faced a problem that I use 2 file streams in a function and try to fopen() both files. Then I can't get the file descriptor. But if I just use 1 file stream and 1 fopen(), then i can get the file descriptor. Does anybody know why this happens? Thanks in advance.
... (2 Replies)
Hi,
Need some help with creating a file from input steam. Meaning from following command myfunc should be able to store the input stream to a file.
echo a b c | myfunc
The file thus created should have -
a
b
c
Here's what I've tried in myfunc() but didn't help -
myfunc() { cat... (3 Replies)