Static const double in c++

Question

Is this the proper way to use a static const variable? In my top level class (Shape)

#ifndef SHAPE_H
#define SHAPE_H

class Shape
{
public:

    static cons         


        

Answer 1

If you have a way to add C++0x flag to your compiler, you would've been able to do:

ifndef SHAPE_H
#define SHAPE_H

class Shape
{
public:

    static constexpr double pi = 3.14159265;
private:
    double originX;
    double originY;
};

#endif

In C++0x you are able to use const expressions to types other than integral ones. This enables you to declare and define in place your constant variable.