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eof

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Header File

io.h

Category

Input/output Routines

Prototype

int eof(int handle);

Description

Checks for end-of-file.

eof determines whether the file associated with handle has reached end-of-file.

Return Value

If the current position is end-of-file, eof returns the value 1; otherwise, it returns 0. A return value of -1 indicates an error; the global variable errno is set to

EBADF

Bad file number



Example

#include <sys\stat.h>
#include <string.h>
#include <stdio.h>
#include <fcntl.h>
#include <io.h>
int main(void)
{
   int handle;
   char msg[] = "This is a test";
   char ch;
   /* create a file */
   handle = open("DUMMY.FIL",
                 O_CREAT | O_RDWR,
                 S_IREAD | S_IWRITE);
   /* write some data to the file */
   write(handle, msg, strlen(msg));
   /* seek to the beginning of the file */
   lseek(handle, 0L, SEEK_SET);
   /* reads chars from the file until it reaches EOF */
   do
   {
      read(handle, &ch, 1);
      printf("%c", ch);
   } while (!eof(handle));
   close(handle);
   return 0;
}

Portability

POSIX Win32 ANSI C ANSI C++

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