array of integers.
appears in an expression, it is converted
to a pointer to (the first of three) five-membered arrays of integers.
In the expression
which is equivalent to
is first converted to a pointer as described;
is converted to the type of
which involves multiplying
length of the object to which the pointer points,
namely five integer objects.
The results are added and indirection applied to
yield an array (of five integers), which in turn is converted to
a pointer to the first of the integers.
If there is another subscript the same argument applies
again; this time the result is an integer.
— end example