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

rewind

function

<cstdio>

void rewind ( FILE * stream );

Set position indicator to the beginning

Sets the position indicator associated with stream to the beginning of the file.
A call to rewind is equivalent to:

fseek ( stream , 0L , SEEK_SET );
except that, unlike fseek, rewind clears the error indicator.
On streams open for update (read+write), a call to rewind allows to switch between reading and writing.

Parameters

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

Return Value

none

Example

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

/* rewind example */
#include <stdio.h>
int main ()
{
  int n;
  FILE * pFile;
  char buffer [27];
  pFile = fopen ("myfile.txt","w+");
  for ( n='A' ; n<='Z' ; n++)
    fputc ( n, pFile);
  rewind (pFile);
  fread (buffer,1,26,pFile);
  fclose (pFile);
  buffer[26]='\0';
  puts (buffer);
  return 0;
}

A file called myfile.txt is created for reading and writing and filled with the alphabet. The file is then rewinded, read and its content is stored in a buffer, that then is written to the standard output:

ABCDEFGHIJKLMNOPQRSTUVWXYZ

rewind

Parameters

Return Value

Example

See also