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66 lines
2.1 KiB
Plaintext
66 lines
2.1 KiB
Plaintext
NAME
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fscan - scan a file for possible assignment to variables
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SYNOPSIS
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fscan(fs, x_1, x_2, ..., x_n)
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TYPES
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fs file stream open for reading
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x_1, x_2, ... any
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return integer
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DESCRIPTION
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Starting at the current position on fs and while values remain in the
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x_i arguments, fields of non-whitespace characters are read and evaluated
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in succession and if the corresponding x_i is an lvalue, the value of
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the field is assigned to x_i. Scanning ceases when no x_i remain or
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when the stream reaches end-of-file.
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The function returns the number of fields evaluated.
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EXAMPLE
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> global a, b, c, d;
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> f = fopen("/tmp/junk", "w+");
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> fputs(f, "\t3+4\t\ta-2i d=a^2 'word'")
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> rewind(f)
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> fscan(f, a, b, , c)
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4
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> print a, b, c, d
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7 a-2i word 49
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LIMITS
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none - XXX - is this correct?
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LINK LIBRARY
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none - XXX - is this correct?
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SEE ALSO
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scan, strscan, fscanf, scanf, strscanf, printf, fprintf, strprintf
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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: fscan,v 29.1 1999/12/14 09:15:51 chongo Exp $
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## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/fscan,v $
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##
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## Under source code control: 1996/04/30 03:05:18
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## File existed as early as: 1996
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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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