Two-dimensional array indexes are listed as

rows and columns, or matrix

Explanation:

Two-dimensional 2D arrays are being indexed with the help of two subscripts. The first one is for the row and the second one if for the column. And each of the elements of the 2D array must be of the one kind like they all can be an object type or they all can be of primitive type.

Like:

int A[3][3];

The above is the 2-dimensional array in C++, and elements are of type int, which is a primitive data type.

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