vivekkannan

changed it. thanks.

I checked division by zero initially, but then realised that 1/0 causes double to represent inf. Thought that this could be useful(?) in some situations. For example, atan(1/0) --> 1.57... instead of error.

fixed both. thanks for pointing it out. I have just been told about wacky header files. will changing calc.h to calc.c make things less wackier?

duly noted. will change it ASAP.

Obviously, bc is much more capable than calc. However, calc was not created to replace or even compete with bc or any other awesome command-line calculators. calc is my way of learning a bunch of stuffs (shunting yard).