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calc/help/fscan
Landon Curt Noll a31078bbec Remove all RCS @(#) lines and RCS strings
Some folks might think: “you still use RCS”?!?  And we will say,
hey, at least we switched from SCCS to RCS back in … I think it was
around 1994 ... at least we are keeping up! :-) :-) :-)

Logs say that SCCS version 18 became RCS version 19 on 1994 March 18.

RCS served us well.  But now it is time to move on.   And so we are
switching to git.

Calc releases produce a lot of file changes.  In the 125 releases
of calc since 1996, when I started managing calc releases, there
have been 15473 file mods!
2017-05-23 01:33:23 -07:00

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NAME
fscan - scan a file for possible assignment to variables
SYNOPSIS
fscan(fs, x_1, x_2, ..., x_n)
TYPES
fs file stream open for reading
x_1, x_2, ... any
return integer
DESCRIPTION
Starting at the current position on fs and while values remain in the
x_i arguments, fields of non-whitespace characters are read and evaluated
in succession and if the corresponding x_i is an lvalue, the value of
the field is assigned to x_i. Scanning ceases when no x_i remain or
when the stream reaches end-of-file.
The function returns the number of fields evaluated.
EXAMPLE
; global a, b, c, d;
; f = fopen("/tmp/junk", "w+");
; fputs(f, "\t3+4\t\ta-2i d=a^2 'word'")
; rewind(f)
; fscan(f, a, b, , c)
4
; print a, b, c, d
7 a-2i word 49
LIMITS
The number of arguments is not to exceed 1024.
LINK LIBRARY
none
SEE ALSO
scan, strscan, fscanf, scanf, strscanf, printf, fprintf, strprintf
## Copyright (C) 1999-2006 Landon Curt Noll
##
## Calc is open software; you can redistribute it and/or modify it under
## the terms of the version 2.1 of the GNU Lesser General Public License
## as published by the Free Software Foundation.
##
## Calc is distributed in the hope that it will be useful, but WITHOUT
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
## Public License for more details.
##
## A copy of version 2.1 of the GNU Lesser General Public License is
## distributed with calc under the filename COPYING-LGPL. You should have
## received a copy with calc; if not, write to Free Software Foundation, Inc.
## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
##
## Under source code control: 1996/04/30 03:05:18
## File existed as early as: 1996
##
## chongo <was here> /\oo/\ http://www.isthe.com/chongo/
## Share and enjoy! :-) http://www.isthe.com/chongo/tech/comp/calc/