Initializing 2D Vector?

This is a discussion on Initializing 2D Vector? within the C++ Programming forums, part of the General Programming Boards category; Hi forum! I wonder how can I a initialize a 255x255 Square Matrix ? I thought that Using a Vector ...

  1. #1
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    Question Initializing 2D Vector?

    Hi forum!

    I wonder how can I a initialize a 255x255 Square Matrix ?

    I thought that Using a Vector should be the easy approach, but how can I initialize them?


    I have:
    Code:
    Vector < Vector <int> > matrix2d; //this should be initialized as 255x255 2D vector
    and offcourse when I do something like matrix[j][i] = 123;
    I get a EXEC_BAD_ADDRESS!.

    Any help is very appreciated!

    thanks.
    Mac OS 10.6 Snow Leopard : Darwin

  2. #2
    C++ Witch laserlight's Avatar
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    It should be something like this:
    Code:
    std::vector<std::vector<int> > matrix2d(255, std::vector<int>(255));
    Quote Originally Posted by Bjarne Stroustrup (2000-10-14)
    I get maybe two dozen requests for help with some sort of programming or design problem every day. Most have more sense than to send me hundreds of lines of code. If they do, I ask them to find the smallest example that exhibits the problem and send me that. Mostly, they then find the error themselves. "Finding the smallest program that demonstrates the error" is a powerful debugging tool.
    Look up a C++ Reference and learn How To Ask Questions The Smart Way

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    Thanks!,
    That was fast
    Mac OS 10.6 Snow Leopard : Darwin

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