Urgent!! I/O problem with linked list

This is a discussion on Urgent!! I/O problem with linked list within the C++ Programming forums, part of the General Programming Boards category; I attached the code because it's too long to post and I can't figure out what's wrong with what basically ...

  1. #1
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    Urgent!! I/O problem with linked list

    I attached the code because it's too long to post and I can't figure out what's wrong with what

    basically I'm writing a program that inputs polynomials then lets you add and subtract them (format is like this: 3x3+2x2+1x1+3). I have two problems:

    1) my sort function isn't working at all. I've never used sorting with linked lists so I think it's a logical error. but I can't figure out how to fix it

    2) whenever I try to output any polynomial I've inputted it outputs a random number at the end, but only if the last term in the polynomial isn't a constant

    please check out the code I attached. mostly you need to look at the input function I think, but I'm not sure. I didn't add the definition for the + operator overload because it's very long and I don't use it in my main yet
    Attached Files Attached Files

  2. #2
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    Just trying to fix one thing at a time, I noticed this in your bubble sort function:
    Code:
    if (temp->exp > largest)
    I think you should *dereferrence the temp->exp pointer in order to make an effective boolean comparison to 'largest'.
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