(DO NOT USE THIS UNLESS YOUR CLASS ALLOWS CALCULATORS!) A simple arithmetic evaluator. Enter a sum like 3+4 and Scratch cat will tell you the answer. This project supports numbers, +, -, *, /, (, ), ^, sqrt, sin, cos & log and I've added support for two parameters (arguments, like a, b, x, y, n or cheese). you can now also copy the answers and paste them into your math work. This could be extended to draw graphs? :) And add more mathematical operators.
