CodeGuru Home VC++ / MFC / C++ .NET / C# Visual Basic VB Forums Developer.com
Results 1 to 2 of 2
  1. #1
    Join Date
    Apr 2013
    Posts
    1

    matrix multiplication 3x3 for loops???

    So basically I have to tell the user to input data and i use a for loop:
    for (i=0; i< 3; i++)
    cin >> p[i][0],p[i][1], p[i][2];

    now for the confusing part is, what do i put in the nested for loops to multiply them and output them so it looks something like

    matrix p,r1: # # #
    " ",r2: " "
    " " " "

    thanks

  2. #2
    2kaud's Avatar
    2kaud is offline Super Moderator Power Poster
    Join Date
    Dec 2012
    Location
    England
    Posts
    7,822

    Re: matrix multiplication 3x3 for loops???

    If you were mutiplying 3x3 matrices on paper by hand, how would you do it? When you know how you would do it by hand, then you know the algorithm and then you can can code the algorithm in c++.

    You might like to read this
    http://msdn.microsoft.com/en-gb/library/hh873134.aspx
    All advice is offered in good faith only. All my code is tested (unless stated explicitly otherwise) with the latest version of Microsoft Visual Studio (using the supported features of the latest standard) and is offered as examples only - not as production quality. I cannot offer advice regarding any other c/c++ compiler/IDE or incompatibilities with VS. You are ultimately responsible for the effects of your programs and the integrity of the machines they run on. Anything I post, code snippets, advice, etc is licensed as Public Domain https://creativecommons.org/publicdomain/zero/1.0/ and can be used without reference or acknowledgement. Also note that I only provide advice and guidance via the forums - and not via private messages!

    C++23 Compiler: Microsoft VS2022 (17.6.5)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  





Click Here to Expand Forum to Full Width

Featured