Obj-C Calculator - Radians to Degrees

Question

I\'ve been watching the Stanford CS193P lectures and I\'ve been working on the assignment calculator. I got through the first assignment fairly easily, and I\'m trying to do the

Answer 1

Where did you define operand?

Are you sure that operand is a CGFloat and not a memory address?

How are you formatting your output? If you are using %e it will output in scientific notation...try doing %f