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Thread: finding pi

  1. #1
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    Default finding pi

    i am working on a program that calculates
    pi=4*(1-1/3+1/5-1/7+1/9-1/11+1/13+...)

    etc i know im going to use a for loop for this because i need 30000 terms to approximate the value

    can anybody help me in implementing this? any ideas would help and will be much appreciated


  2. #2
    Member Darryl.Burke's Avatar
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    Default Re: finding pi

    That's not the way a forum works. Post your best efforts and ask a specific question. Note that "How do I do this?" is non-specific.

    Recommended reading:
    How To Ask Questions The Smart Way

    db

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    Default Re: finding pi

    Sounds like you either need a program to find 30,000 prime numbers or a file with them stored. To start with.....nevermind, they are just odd, not prime?
    Last edited by Zula; November 2nd, 2010 at 03:34 PM.

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    Default Re: finding pi

    Looks that this would do it..
    	edited

    This will do much more than 30,000 terms, but when limited to 30,000 I get
    30000: 4*0.7853898300641171 = 3.1415593202564684
    Last edited by copeg; November 2nd, 2010 at 06:11 PM.

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    Administrator copeg's Avatar
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    Default Re: finding pi

    Please do not post full solutions to problems such as this. The intent of these forums is to get folks to try to do things themselves and maybe even learn in the process - either through trial and error and/or trial and success.

    gonfreecks, I suggest you attempt writing this code yourself, and if it doesn't work by all means post back with a specific question about the code, what output you expect versus what you get

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