Compound Interest

 

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This behavior calculates the interest on your savings over a number of years,and shows the amount after each year...

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--------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------------- --   Compound Interest -- --   This behavior calculates the interest on your savings over a number of years, --   and displays the amount after each year... --   --   Kurt * Belgium                        2001 -- --------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------------- -- variables are: A = Nr of years, B = Startamount, -- I = Interest rate, E = Final amount after Nr of years global A, B, I, E   -- First the mousedown handler to clear -- the previous contents of the output field on mousedown -- (so it becomes more visible that the field is cleared each time, -- if you use (member "Output").text = "" in a moviescripts -- on startmovie handler, the field will be empty each time -- the movie starts... on mousedown   (member "Output").text = "" end mousedown -- On mouseup, the new calculation is made -- In Belgium the used formula for compound -- Interest = E = (B * (1 + float(I)/ 100)), -- the same formula is used in other country's to(I think...) -- to show the result for the last year only -- you have to use: power (E = (B * (1 + float(I)/ 100)), A) -- (might be a small diversion in syntax, I didn't try this...) on mouseup   (member "Output").text = ""   the floatprecision = 2   B = (member "C.I") . text   A = (member "Years") . text   I = (member "InterestRate") . text.float      repeat with Ix =  1 to A          E = (B * (1 + float(I)/ 100))     B = E     put E&&"after"&&Ix&&"years." into (member "Output").line[Ix]        end repeat      clearglobals    end mouseup