Date: Sat, 3 Mar 2001 19:27:02 -0500
Message-Id: <200103040027.TAA09839@envy.delorie.com>
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From: DJ Delorie <dj AT delorie DOT com>
To: djgpp AT delorie DOT com
In-reply-to: <Fqeo6.142$nj5.49880@sapphire.mtt.net>
	(jstewart1 AT ns DOT sympatico DOT ca)
Subject: Re: trig function?? loopings
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What I would do (besides not using C++ for such a trivial task ;) is
read in a line (array of chars), check the line for being empty (the
sentinel), and then parse the line as a number (using sscanf, I
suppose).  That also handles bogus input better, since your code won't
handle malformed input well.  In general, when I want a line of input
from the user, I read a *line*, and parse it myself.

You should also multiply degrees times M_PI/180, not the other way
around.