Reference
C Library
IOstream Library
Strings library
STL Containers
STL Algorithms
Miscellaneous

C Library
cassert (assert.h)
cctype (ctype.h)
cerrno (errno.h)
cfloat (float.h)
ciso646 (iso646.h)
climits (limits.h)
clocale (locale.h)
cmath (math.h)
csetjmp (setjmp.h)
csignal (signal.h)
cstdarg (stdarg.h)
cstddef (stddef.h)
cstdio (stdio.h)
cstdlib (stdlib.h)
cstring (string.h)
ctime (time.h)

cstdio (stdio.h)
functions:
clearerr
fclose
feof
ferror
fflush
fgetc
fgetpos
fgets
fopen
fprintf
fputc
fputs
fread
freopen
fscanf
fseek
fsetpos
ftell
fwrite
getc
getchar
gets
perror
printf
putc
putchar
puts
remove
rename
rewind
scanf
setbuf
setvbuf
sprintf
sscanf
tmpfile
tmpnam
ungetc
vfprintf
vprintf
vsprintf
macro constants:
EOF
FILENAME_MAX
NULL
TMP_MAX
objects:
stderr
stdin
stdout
types:
FILE
fpos_t
size_t

feof

function

<cstdio>

int feof ( FILE * stream );

Check End-of-File indicator

Checks whether the End-of-File indicator associated with stream is set, returning a value different from zero if it is.
This indicator is generally set by a previous operation on the stream that reached the End-of-File.
Further operations on the stream once the End-of-File has been reached will fail until either rewind, fseek or fsetpos is successfully called to set the position indicator to a new value.

Parameters

stream: Pointer to a FILE object that identifies the stream.

Return Value

A non-zero value is returned in the case that the End-of-File indicator associated with the stream is set.
Otherwise, a zero value is returned.

Example

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

/* feof example: byte counter */
#include <stdio.h>
int main ()
{
  FILE * pFile;
  long n = 0;
  pFile = fopen ("myfile.txt","rb");
  if (pFile==NULL) perror ("Error opening file");
  else
  {
    while (!feof(pFile)) {
      fgetc (pFile);
      n++;
      }
    fclose (pFile);
    printf ("Total number of bytes: %d\n", n-1);
  }
  return 0;
}

This code opens the file called myfile.txt, and counts the number of characters that it contains by reading all of them one by one. Finaly the total amount of bytes is printed out.

feof

Parameters

Return Value

Example

See also