A.inta[2][3] B.intb[][3]={0,1,2,3} C.intc[100][100]={0} D.intd[3][]={{1,2},{1,2,3},{1,2,3,4}}
A.3 B.6 C.10 D.20
A.i=*p B.*p=*&j C.i=&j D.i=**p