stupid matrix question

[Unregistered]

Hi,

This question is gonna sound dumb, but say, if I want a 4x5 matrix (ie 4 rows, 5 columns) would I declare it as:

matrix[4][5] or matrix [5][4].

thanks

[quzah]

It doesn't matter which way you declare it. You can use it either way. You just have to make your output behave correctly.

int matrix[4][5];

This means to me: "Four columns, five rows." Or as in relation to an xy axes, x = across, y = down, so, 4 wide, by 5 high.

In reality, either way will give you a usable grid, you just have to modify your input and output to use it correctly.

You want "four rows, five columns", so you'd actually use:

int matrix[5][4];

Because generally speaking, you use the first for the X axes/width, second for the Y axes/height, and a third would be Z, assuming you ever decided to use a Z...

Quzah.

[Unregistered]

Conventionally, most people do it like matrix [rows][columns]

[quzah]

> Conventionally, most people do it like matrix [rows][columns]

[edit]
Actually, let me correct myself. It depends on the situation. The most common occurance of my using multi-dimensional arrays is when using a grid for chess or a maze or something similar. When I use it this way, I use the following:

matrix[X][Y]

Just like your screen area: 800x600, 1024x768.

Honestly for my own use, I don't think I've done it any other way. It's easy to see a multi-dimensional array as it relates to my screen, so I don't recall ever doing it any other way.
[/edit]

Quzah.

[swoopy]

>Conventionally, most people do it like matrix [rows][columns]
Same here.