how do i declare a two d array using new?

like for a "normal" array i would:

int* ary = new int[Size]

but

int** ary = new int[sizeY][sizeX]

a) deosn't work/compile and b) doesn't acomplish what:

int ary[sizeY][sizeX] 

does.

How do i declare a 2d array using new?

Like, for a "normal" array I would:

int* ary = new int[Size]

but

int** ary = new int[sizeY][sizeX]

a) doesn't work/compile and b) doesn't accomplish what:

int ary[sizeY][sizeX] 

does.