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Thread: Help me write this program.

  1. #1
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    Default Help me write this program.

    Write a program that creates a file containing a table showing the student ID numbers and averages of
    all the students in a course in ascending order by ID number. The input to the program is a file
    containing student records. Each student record consists of a studentís first name, a studentís last name,
    a studentís ID number, and the studentís average. Each of the fields of the record is separated by a
    newline character and there is one newline character separating one studentís record from the next
    record in the file. Each studentís ID number has the following form LDD-DDDDD. L is the letter B,
    M, or P and the Dís are digits. You may assume that the data was validated before it was put in the file.
    You may assume that there will not be more than one hundred student records in the input file.
    Your program must allow the user to enter the names of both the input file and the output file.
    Create a system of parallel arrays to store the data needed from the file. One array should store the
    studentís ID numbers and one array should store the studentís averages. The arrays should be related by
    the subscripts. The first studentís ID number is in the student ID array at subscript 0 and the studentís
    average is the averages array at subscript 0.
    Your program must consist of at least four meaningful methods. For example, you might create a
    method to read the input file and store the necessary data in your arrays, another method that performs
    the sort, and another method that writes the data from the arrays to the output file (your fourth method
    would be your main method). Create additional methods as you find necessary. You must pass data
    between the methods using arguments and parameters. You may not declare any variables globally
    (outside of the methods). There must be a paragraph of comments before each of your methods that
    describes what the method does and what inputs it receives and outputs it returns.
    Modify the selection sort algorithm provided in the text to perform the sort. When you sort the data in
    your arrays you must maintain the relationship between the elements across the parallel arrays. As you
    move an ID number, the corresponding average must also be moved.


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    Super Moderator helloworld922's Avatar
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    Default Re: Help me write this program.

    Please provide us with what you've tried so far and where you are stuck and we'll be willing to help you, but we won't do if for you. See: The problem with Spoon Feeding.
    Last edited by helloworld922; December 6th, 2011 at 02:42 AM.

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    Default Re: Help me write this program.

    I dont really need the code for anything anymore because i wrote it in these past few hours.
    But i was wondering what a method would be like to order the ID Numbers in Ascending order. I know its a selection sort but i am not sure how
    to go about coding it.

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    Default Re: Help me write this program.

    Use a sort to put objects in order.

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    Default Re: Help me write this program.

    Quote Originally Posted by HuKjr View Post
    I dont really need the code for anything anymore because i wrote it in these past few hours.
    But i was wondering what a method would be like to order the ID Numbers in Ascending order. I know its a selection sort but i am not sure how
    to go about coding it.
    Implement a sort algorithm such as Bubble sort or Quick sort. The algorithm and implementation are very popular on the web.

    Spring 3
    Last edited by cafeteria84; January 22nd, 2012 at 03:01 PM.

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