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An array type has no padding in between its elements. Therefore, an array with element type T is just a sequence of T objects laid out in memory, in order.

A multidimensional array is an array of arrays, and the above applies recursively. For example, if we have the declaration

int a[5][3];

then a is an array of 5 arrays of 3 ints. Therefore, a[0], which consists of the three elements a[0][0], a[0][1], a[0][2], is laid out in memory before a[1], which consists of a[1][0], a[1][1], and a[1][2]. This is called row major order.

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