array third parameter

Question

In a array delclaration a[][][] in which third square brackets what represents?

Answer 1

In simple words,
1d array represent array of elements of a type like int,String etc.
2d array represent array of 1d array (having elements as 1d array)
3d array represent array of 2d array (having elements as 2d array).

Answer 2

See a [][][] is a 3D array
The three square brackets are represented as it is a 3D array.
So if you want to make a 1D array which will have a declaration like this :
int a [4] = {1,2,3,4}; //you can use any data type you want
If you are making 2D array :
int a [2][5] = {
{1,2,3,4,5},
{6,7,8,9,0}
};
You can think of 2D array as like multiple 1D array
And the 3D array will be like :
int a [2][3][4] = {
{
{1,2,78,23},
{3,4,76,97},
{35,46,96,34}
},
{
{23,84,46,12},
{37,34,97,34},
{86,34,87,22}
},
};
As you can see the more you increase the square brackets the dimensions will be also increased.

Answer 3

Everything at first is a 1 D array...

a 1 D array with elements of certain type like
int char float double pointers etc...are conventional 1 D array

a 1 D array with elements that are a 1 D array is a conventional 2 D array

a 1 D array with elements that are a 2 D array is a conventional 3 D array..

a 1 D array with elements that are a n D array is a conventional (n+1) D array
......goes on and on...

but at first and in basic array composition also.. everything is a 1 D array...nothing more