im only 16 so dont go into realy complicated stuff thanks! :)
Well i am also of the age sixteen.I am studying grade twelth from india.I will explain to you it easily.Copper is extracted from Copper pyrites.(CuFeS2).it is kept in a reverberatory furnace and heated.i.e smelting process.By this process u can remove all the impurities with the ore.The impurities are Sulphur,phosphorus etc.I can give all the equations but it will be very long.if u want more about this please mail to me.piks_14@ayhoo.co.in.i can help u a lot.My father is a chemistry scientist and working in IIT india.if u want more information i will give u.
I think there may be a couple problems with your code, but I'll help you with one. You have created a class named ComplexNumbers. Towards the bottom of your code, you have a couple of constructor methods named Complex. Now, if those are the constructor methods for ComplexNumbers, they need to be named ComplexNumbers (the same as the class). If they are really constructors for a class named Complex, then you need to put them in a class named Complex. The bottom line is the constructor methods must have EXACTLY the same name as the class they are in...