// Two dimensional array

int a[2][3]= {

        {1, 2, 3},

        {4, 5, 6}

    };

    cout << a[1][1]; // Output is 5

​

// Three dimensional array

//[2] is elements; [3] is rows in elements; [4] is column in elemnents 

int a[2][3][2]= {

        //Element 0

        { {1, 2}, 

          {2, 3}, 

          {4, 5} 

        },

        // Element 1

        { {6, 7}, 

          {8, 9}, 

          {10, 11} 

        }

    };

    cout << a[0][1][1]; // Prints 3