Describe in details the relationship between the pointer and array.

 Consider and array

                   int arr[4];

In arrays of C programming, name of the array always points to the first element of an array. Here, address of first element of an array is &arr[0]. Also, arr represents the address of the pointer where it is pointing. Hence, &arr[0] is equivalent to arr.

Also, value inside the address &arr[0] and address arr are equal. Value in address &arr[0] is arr[0] and value in address arr is *arr. Hence, arr[0] is equivalent to *arr.

Similarly,

• &a[1] is equivalent to (a+1) AND, a[1] is equivalent to *(a+1).
• &a[2] is equivalent to (a+2) AND, a[2] is equivalent to *(a+2).

&a[3] is equivalent to (a+1) AND, a[3] is equivalent to *(a+3)

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