Reading in Functions

[Marc W. Mengel]

In article <1197 at utkcs2.cs.utk.edu> wozniak at 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-


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 Marc Mengel					mmengel at cuuxb.att.com
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