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Editorial Team
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Asked: 2026-05-15T03:16:58+00:00

I know that they are used to store data, but I have a difficult

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I know that they are used to store data, but I have a difficult time understanding exactly how to use them in a program.

In addition, I found this site with a tetris clone tutorial (the actual tutorial is missing). It uses arrays, but I can’t really make sense of how it works.

Here’s an example of the code – 

public int[, ,] TShape = new int[4, 4, 2] 
            {
            {{1, 0}, {0, 1}, {1, 1}, {2, 1}}, 
            {{1, 0}, {0, 1}, {1, 1}, {1, 2}}, 
            {{0, 0}, {1, 0}, {2, 0}, {1, 1}}, 
            {{0, 0}, {0, 1}, {1, 1}, {0, 2}}};

Could it be that I’m looking too hard into this, or perhaps there’s something I’m not grasping about it?

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1 Answer

  1. Editorial Team

    Imagine you have 10 boxes. Now you want to clearly tell someone which box you are talking about. So you assign numbers to them, from 0 to 9. What you have now is an array of boxes, defined as:

    box[ 10 ]

    The number in the brackets tells you, how many of them are there. By default they are numbered from 0 to 9 (some languages allow to change this, but lets skip that for now). So if you are talking about the fifth box, its box[ 4 ] (since we index from 0!). Now imagine you open the box and see that there are five balls in it. This defines an array:

    box[ 10 ][ 5 ]

    A two dimensional array. How do you tell your friend which ball do you want to talk about? Again, you number them, this time from 0 to 4. How do you specify say the third ball in the seventh box? Simple: box[ 6 ][ 2 ]. And so on. Hope that helps.

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