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74 lines
2.0 KiB
Plaintext
74 lines
2.0 KiB
Plaintext
NAME
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ftell - return a file position
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SYNOPSIS
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ftell(fd)
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TYPES
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fd open file stream
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return non-negative integer or error value
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DESCRIPTION
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This function attempts to return the current value of the file position
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indicator for the stream. This is the number of characters (bytes)
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between the beginning of the file and the position of the
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next character for output in "w" or "w+" mode or for input.
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On failure, this returns an error value.
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EXAMPLE
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> fd = fopen("/tmp/curds", "w")
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> fputs(fd, "0123456789")
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> ftell(fd)
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10
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> fputs(fd, "abcdef")
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> ftell(fd)
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16
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> fseek(fd, 20, 0)
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> ftell(fd)
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20
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> fputs(fd, "01234")
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> ftell(fd)
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25
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> freopen(fd, "r")
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> fscanf(fd, "%*5c")
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0
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> ftell(fd)
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5
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LIMITS
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none
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LINK LIBRARY
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none
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SEE ALSO
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fseek, fgetpos, fsetpos, rewind, strerror
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## Copyright (C) 1999 Landon Curt Noll
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##
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## Calc is open software; you can redistribute it and/or modify it under
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## the terms of the version 2.1 of the GNU Lesser General Public License
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## as published by the Free Software Foundation.
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##
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## Calc is distributed in the hope that it will be useful, but WITHOUT
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## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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## Public License for more details.
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##
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## A copy of version 2.1 of the GNU Lesser General Public License is
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## distributed with calc under the filename COPYING-LGPL. You should have
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## received a copy with calc; if not, write to Free Software Foundation, Inc.
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## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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##
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## @(#) $Revision: 29.1 $
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## @(#) $Id: ftell,v 29.1 1999/12/14 09:15:52 chongo Exp $
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## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/ftell,v $
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##
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## Under source code control: 1995/03/04 11:33:21
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## File existed as early as: 1995
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##
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## chongo <was here> /\oo/\ http://reality.sgi.com/chongo/
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## Share and enjoy! :-) http://reality.sgi.com/chongo/tech/comp/calc/
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