whats the difference between these types

assuming struct S is defined,
'const struct S *&' and 'struct S * const &'

using VC6

So the placement of the const determines what it is applied to? How do you determine what is constant and what isnt based on the type?

Quote:

---

So the placement of the const determines what it is applied to?

---

Yes.

Quote:

---

How do you determine what is constant and what isnt based on the type?

---

const only applies to the pointer when it's placed after the asterisk. For example, these two declarations are equivalent:

Code:

---

const MyType* MyVar;
MyType const* MyVar;

---

Meaning, MyVar can change, but *MyVar cannot. However,

Code:

---

MyType* const MyVar;

---

means MyVar cannot change, but *MyVar can.

Or if you like symmetry:

MyType const * const MyVar;