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In fact, the identifier of the array is itself treated as a pointer to the zeroth element of the array (remember array indexing begins with 0).  The following are equivalent:

    f_array              and    &f_array[0]
    f_array+1          and    &f_array[1]
    *(f_array+1)    and    f_array[1]

That is, the syntax:  name[i] is treated the same as:  *(name+i) in C.  If f_ptr contains the address of f_array[5], then the following are equivalent:

    f_ptr[1]    and    f_array[6] 

However, an important distinction between an array identifier and a true pointer variable is that the former is a constant address, and cannot have a new value assigned to it:

    f_array = f_ptr;    /*  disallowed, since f_array is a pointer constant, not variable  */




-- part contents for background part 7
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