Notation in Expressions
The C++ language specifies certain compatibilities when specifying operands. The following table shows the types of operands acceptable to operators that require operands of type type.
Operand Types Acceptable to Operators
| Type expected | Types allowed |
|---|---|
type |
const type volatile type type& const type& volatile type& volatile const type volatile const type& |
type* |
type* consttype* volatiletype* volatile const |
const type |
typeconst typeconst type& |
volatile type |
typevolatile typevolatile type& |
Because the preceding rules can always be used in combination, a const pointer to a volatile object can be supplied where a pointer is expected.