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Warning: main() [function.include]: Failed opening '/www/www/htdocs/style/globals.php' for inclusion (include_path='.:/www/www/common:/www/www/php/lib/php') in /www/www/docs/6.4.1/neutrino/lib_ref/e/eof.html on line 1
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Warning: main() [function.include]: Failed opening '/www/www/htdocs/style/header.php' for inclusion (include_path='.:/www/www/common:/www/www/php/lib/php') in /www/www/docs/6.4.1/neutrino/lib_ref/e/eof.html on line 8
Test if the end-of-file has been reached
#include <unistd.h>
int eof( int filedes );
- filedes
- A file descriptor for the file that you want to check.
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The eof() function is a low-level function that determines if the
end of the file specified by filedes has been reached.
Input operations set the current file position; you can call the
eof() function to detect the end of the file
before more input operations to prevent attempts at reading beyond the end
of the file.
- 1
- The end-of-file has been reached.
- 0
- The end-of-file hasn't been reached.
- -1
- An error occurred (errno is set).
- EBADF
- The file descriptor, filedes, isn't valid.
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
int main( void )
{
int filedes , len;
char buffer[100];
filedes = open( "file", O_RDONLY );
if( filedes != -1 ) {
while( ! eof( filedes ) ) {
len = read( filedes , buffer, sizeof(buffer) - 1 );
buffer[ len ] = '\0';
printf( "%s", buffer );
}
close( filedes );
return EXIT_SUCCESS;
}
return EXIT_FAILURE;
}
QNX 4
Safety: | |
Cancellation point |
Yes |
Interrupt handler |
No |
Signal handler |
Yes |
Thread |
Yes |
errno,
feof(),
open(),
read()
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