Syntax

#include <io.h>
int __eof (int handle);

• eof determines whether the file pointer has reached the end-of-file for the file associated with handle. You cannot use __eof on a nonseekable file; it will fail.

• eof returns the value 1 if the current position is the end of the file or 0 if it is not. A return value of -1 shows an error, and the system sets errno to the following values:

  Value

  Meaning
  EBADF
  File handle is not valid.
  EOS2ERR
  The call to the operating system was not successful.

This example creates the file sample.dat and then checks if the file pointer is at the end of that file using the __eof function.

#include <sys\stat.h>#include <io.h>
#include <stdio.h>
#include <stdlib.h>;

int main(void)
{
   int fh,returnValue;

   fh = creat("sample.dat", S_IREAD|S_IWRITE);
   if (-1 == fh) {
      perror("Error creating sample.dat");
      return EXIT_FAILURE;
   }
   if (-1 == (returnValue = __eof(fh))) {
      perror("eof function error");
      return EXIT_FAILURE;
   }
   if (1 == returnValue)
      printf("File pointer is at end-of-file position.\n");
   else
      printf("File pointer is not at end-of-file position.\n");
   close(fh);
   return 0;

   /****************************************************************************
      The output should be:

      File pointer is at end-of-file position.
   ****************************************************************************/
}

• chsize
  
• creat
  
• filelength
  
• sopen
  
• open

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