how to use array and pointer

Answer 1

first u have to point the address of first block of array (eg . int *p,a[5]; p=&a[0]; ) after that u can access the add. or value of any block. by using:
a[i]=*(p+i) and &a[i]=p+i

Answer 2

array[1] is equivalent of *(array + 1). So we could say that for arrays pointer is kind of "syntactic sugar" (meaning that is a kind of shortcut)