Path: utzoo!utgpu!watmath!att!cuuxb!mmengel
From: mmengel@cuuxb.ATT.COM (Marc W. Mengel)
Newsgroups: comp.lang.c
Subject: Re: Reading in Functions
Message-ID: <4261@cuuxb.ATT.COM>
Date: 19 Oct 89 16:08:48 GMT
References: <1197@utkcs2.cs.utk.edu>
Reply-To: mmengel@cuuxb.UUCP (Marc W. Mengel)
Organization: AT&T-DSD, System Engineering for Resellers, Lisle IL
Lines: 19

In article <1197@utkcs2.cs.utk.edu> wozniak@utkux1.utk.edu (Bryon Lape) writes:
>
>	How does one write a procedure in C so that the user can type in
>a formula from the keyboard and the programme will graph it?  I can
>handle the graphing part, but what I want to be able to do is is have a
>programme that will read in a function and graph the result.

	The only neat, clean, portable way to do this is to write a
	string expression parser, and interpret the function string
	for each point on the graph.  The parser can be pretty
	simple; just a recursive descent type deal.

>-bryon-


-- 
 Marc Mengel					mmengel@cuuxb.att.com
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