A.int[]5[5] a=new int[][]; B.int a=new int[5,5]; C.int []a[]=new int[5][5]; D.int[][] a= new[5]int[5];
A.int[][] a=newint[2][]; B.int[2][] a=newint[2][]; C.int a[2][3]=newint[][]; D.int a[][]={3,4,5};
A.int[] a; B.int[2][] a; C.int a[2][3]; D.int[][] a;