Enumerated Constants

Could someone please explain Enumerated Constants to me?
I dont understand them...thanks.

Another use for enumerations is within class scope.
for instance

Code:

---

class Blueprint
{
    private:
          const int Len=30;  // error declaring a constant with class scope is an error because no object yet exists,  until you create an object there is no place for the compiler to store a value.

instead:

class Blueprint
{
    private:
          enum {Len=30};//class specific constant does not create a class data member

---

Got this from c++ primer plus 3rd edition

However that's abuse of enums. The correct way to do a class-scoped constant is to make it static:

Code:

---

class HasConstant
{
public:
  static const int THE_CONSTANT;
};

// Implementation file:
const int HasConstant::THE_CONSTANT = 234;

---

Ahh things you learn from people and not from books thanks. (Although books are written by people lol)