How do we create N matrices simultaneously in C++?
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Thread: How do we create N matrices simultaneously in C++?

  1. #1
    Join Date
    Feb 2014
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    1

    How do we create N matrices simultaneously in C++?

    Hi!

    I would like to create N matrices of dimension (n,k) simultaneously. Lets say for example that N=3. Could you please help me. I read the command a[n][k][N] but I don't understand how to use it.

    Please help me, I know that for some of you this question is silly but I' m new to this language and I have no one else to ask.

  2. #2
    Join Date
    Dec 2012
    Location
    England
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    Re: How do we create N matrices simultaneously in C++?

    You don't say of what type you want the matrices to be or whether n, k, n are constant known values at the time of compile or run-time parameters - which makes a big difference.

    The simplest way to create a 3 dimensional matrix is
    Code:
    const int n = 10;
    const int k = 5;
    const int N = 15;
    
    int matrix[n][k][N];
    The element of this matrix can be accessed as eg
    Code:
    matrix[1][3][2];
    I would like to create N matrices of dimension (n,k) simultaneously.
    However, do you actually mean that you want N matrices?
    Code:
    const int n = 10;
    const int k = 5;
    const int N = 15;
    
    typedef int mat[n][k];
    
    mat nkN[N];
    here nkN is a matrix of dimension N of type mat which is a matrix of dimensions n, k.

    What are you trying to do?
    All advice is offered in good faith only. You are ultimately responsible for effects of your programs and the integrity of the machines they run on.

  3. #3
    Join Date
    Mar 2014
    Location
    Warsaw, Poland
    Posts
    3

    Re: How do we create N matrices simultaneously in C++?

    Could you define "simultaneously" ? Moreover, "a[n][k][N]" is not a command, it's a definition.

  4. #4
    Join Date
    Jul 2013
    Posts
    247

    Re: How do we create N matrices simultaneously in C++?

    Quote Originally Posted by GeFo View Post
    Please help me
    I don't want to be mean but programming is not for everyone. Maybe you should do something else if you think about it.

    Do you really like to program? If you did then this is trivial with a little trial and error, a book or two, and the net.

    You can't just sit there expecting to be fed information with a silver spoon for heaven's sake. Grow up or quit.
    Last edited by razzle; March 8th, 2014 at 08:11 PM.

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