Multidimensional array declaration?

lower_bowl Joined: 07/31/08 Posts: 3

Posted: 08/04/08 23:39:20 Something I noticed: int[10][3] arrayA; int arrayB[10][3]; arrayB[9][2] = 10; // no problem arrayA[9][2] = 10; // error; array out of bounds Which method of declaration is considered the standard? And why is it that these two behave so differently with respect to column/row; is there a legacy or standardization reason for it? Just curious.

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schveiguy Joined: 08/02/07 Posts: 108

Posted: 08/05/08 17:24:17 First method is the standard. The reason you get the error is because of the way the compiler looks at the declaration. It looks at it as an array of three (array of 10 ints): (int[10])[3]; So if you think of T as type int[10], it looks like: T[3] So how would you access an element? arrayA[0]; // of type int[10] (or T) arrayA[2][9]; // the last element in the multi-dimensional array. Yeah, it seems backwards, but it's consistent :) -Steve