Adding Long Integers!

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  1. #1
    Registered User alireza beygi's Avatar
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    Adding Long Integers!

    How can we add too long integers (for example 20 digits) with usage of Strings?

  2. #2
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    I like to use four char arrays:
    carry[]
    add1[]
    add2[]
    =====
    sum[]

    Set each of them up with an initial value of 0 in them, and use them just like you would do it by hand, with a pencil, working from right to left. (so your index decrements, not increments).

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