I am making a program that will give C, A, B, and D of the equation Y=C+AcosB(θ-D) when you are given the graph. I have the base program down and it works but when I am not given a min or max it doesn't work. See pics of the problems I'm trying to solve at http://imgur.com/a/it1q1

C is found by averaging max and min
A is found by max minus C
B is found by 360/length of period
D is found by first max

In the beginning I need to ask if C is given and if it is I need to find either max or min and then continue the program.


Code:


The error I get is that when it gets to the else after Goto R in the code, is syntax.
Also, if I say that C is given it says done on the screen and nothing is executed.

You have If/Then/Else/Else. You can't have two Else clauses for a single If/Then. Also, you're Goto'ing out of an If/Then/[Else/]End, which is one of the best ways to create memory leaks.

I was trying to have the if k=1 then blahblah else as a nested loop inside of the then part of the if O=1 statement. How do I clear this up?
How do I avoid goto'ing out without having to basically rewrite the whole prog?

Then I think you want something like this:


Code:
(The indentation is for clarity and should not be included in the program, of course.