Thread: knapsack problem

  1. #1
    Registered User
    Join Date
    May 2007

    Unhappy knapsack problem

    i have algorithm for the knap sack i want to convert it to c++ langugh
    can you advice me ?

    can i use a file to put the data ?
    for example i have knap sack for year 2000, year 2001 and year2002
    and each of them have a size and value
    thue i have to create a 3 files

    but how can i delete the data from the files`for the next user

    or do you have another solution or better than the file???

    thank you

  2. #2
    Frequently Quite Prolix dwks's Avatar
    Join Date
    Apr 2005
    You can delete a file with with the ANSI C (and thus C++) standard function remove() in <cstdio>. (Make sure that you don't have any open streams referring to the file first.)

    But it's probably a bad design to write the data into a file (or three). Why not just create three separate variables? Or better yet, one function which handles any knapsack, which you then call three times?

    Also, if you want to learn more about the knapsack problem itself, try this Wikipedia entry.

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