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baykko

Mon Sep 15, 2008 7:18 pm


finding sum of all numbers until an eof of -99 is entered?

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i have kind of forgotten my basic turing knowledge
i am required to create a program where you can enter an unlimited amount of numbers, and it will end once you enter -99 and it will find the sum of all the numbers that you entered
i only know how to do this for a set number of entries, but how would I be able to keep entering an unlimited amount of numbers with no limit?


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Insectoid

Mon Sep 15, 2008 7:53 pm


RE:finding sum of all numbers until an eof of -99 is entered?

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You would have a loop, with an exit when num= -99, then get a number from the user and add it to a variable 'total'.


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baykko

Mon Sep 15, 2008 8:04 pm


Re: finding sum of all numbers until an eof of -99 is entered?

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how can i make it so when i enter the eof of -99, it isnt added to my total sum? this is what ive done so far

    var numb, totalsum : int := 0
    loop
        get numb
        totalsum := totalsum + numb
        exit when numb = -99
    end loop
    put totalsum



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Insectoid

Mon Sep 15, 2008 8:09 pm


RE:finding sum of all numbers until an eof of -99 is entered?

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you do the exit when at the top of the loop, the first thing


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baykko

Mon Sep 15, 2008 8:14 pm


Re: finding sum of all numbers until an eof of -99 is entered?

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I moved the exit in between get numb and totalsum:= and it works properly now
thanks guys


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Insectoid

Mon Sep 15, 2008 8:16 pm


RE:finding sum of all numbers until an eof of -99 is entered?

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no, no, no, put it at the VERY TOP of your loop. This is important as you get into larger programs.


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baykko

Mon Sep 15, 2008 8:18 pm


Re: finding sum of all numbers until an eof of -99 is entered?

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when i put it at the very top of the loop, the -99 gets added to my totalsum


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gitoxa

Mon Sep 15, 2008 8:19 pm


Re: RE:finding sum of all numbers until an eof of -99 is entered?

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no, no, no, put it at the VERY TOP of your loop. This is important as you get into larger programs.

He's got it in the right place.  There isn't a set place for an exit to go, it's just wherever it'll be most efficient.  In this case, it's where he's moved it to.