A.x=pa[3] B.x=*(a+3) C.x=a[3] D.x=*pa+3
A.charsl[]="abcdef" B.chars2[4]="abed" C.chars3[2][3]={"abc","xyz"} D.chars4[4][]={‘a’,’x’,’s’,’t’,}
A.constdoubleDD=3.14 B.constintM=20 C.constcharch D.constboolmark=true