Thread: Searching within strings

  1. #1
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    Searching within strings

    I am trying to write a math engine. The problem I've encountered is that if a user enters say:
    add(12345,12345)
    then how do I know how many digits to read.
    Any solutions?

  2. #2
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    You read until there are no more digits left to read. isdigit() would be a helpful function in parsing this out.

  3. #3
    ATH0 quzah's Avatar
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    You could use some fancy sscanf work if they're going to be using a standard format.

    <operator><paren><op1><,><op2><paren>


    Quzah.
    Hope is the first step on the road to disappointment.

  4. #4
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    Question huh?

    Quote Originally Posted by Poincare View Post
    I am trying to write a math engine. The problem I've encountered is that if a user enters say:
    add(12345,12345)
    then how do I know how many digits to read.
    Any solutions?
    It seems to me that if you are inputting strings you will want to worry about this, but why wouldn't you use floats or ints or something else that isn't a string for your input?

    - Edward

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