Hello all, > Well, the best way to explain is to take an example. Let's say you > want to calculate ((2 + 5) * 3 - (4 / 6)) * ((8 - 2 * 3) / 9 + (10 - > 1))
<SNIP> > In other words, if you were > using a HP48, here's what you'd be inputting: > > 2 > 5 > + > 3 > * > 4 > 6 > / > 8 > 2 > 3 > * > - > 9 > / > 10 > 1 > - > + > * Just to clarify, that would actually be 2 5 + 3 * 4 6 / - << 8 2 3 * - 9 / 10 1 - + * , correct? (There should be a minus after "4 6 /") Also, in order to find the answer it looks like you want (in Python), you should do ((2 + 5) * 3 - (4.0 / 6)) * ((8 - 2 * 3) / 9.0 + (10 - 1)) and, if your RPN doesn't handle numbers as floats or Decimals (new as of Python 2.3 I believe), 2 5 + 3 * 4.0 6 / - 8 2 3 * - 9.0 / 10 1 - + * Otherwise you get 189 because (4 / 6) evaluates to 0, as does ((8 - 2 * 3) / 9). By the way, anyone interested in seeing/reviewing an RPN calculator I wrote, feel free to visit http://rafb.net/paste/results/BW1hxH51.html (57 lines) _______________________________________________ Tutor maillist - [EMAIL PROTECTED] http://mail.python.org/mailman/listinfo/tutor
