HP 3000 Manuals HP 3000 Manuals
Address and Indirection Operators
The address (&) and indirection (*) operators are used to locate the
address of an operand and indirectly access the contents of the address.
Syntax
& cast-expression
* cast-expression
Description
The operand of the unary indirection operator (*) must be a pointer to
type T. The resulting type is T. If type T is not a function type, the
unary-expression is an lvalue.
The contents of pointers are memory addresses. No range checking is done
on indirection operations. Specifically, storing values indirectly
through a pointer that was not correctly initialized can cause bounds
errors or destruction of valid data.
The operand of the unary address-of operator (&) must be a function
designator or an lvalue. This precludes taking the address of constants
(for example, &3), because 3 is not an lvalue. If the type of the
operand is T, the result of the address of operator is a pointer to type
T. The & operator may not be applied to bit fields or objects with the
register storage class.
It is always true that if E is an lvalue, then *&E is an lvalue
expression equal to E.