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Creating an object to a class only using new

kumarvinay (6)
Hi all,

I want to write a class which will allow to create an object only using new (Dynamic object creation) i.e., i should not be able to create a static object, how can i do this please guide me.
jsmith (5804)
Make all constructors private, then write a friend function that returns a pointer to
a dynamically allocated instance.
kumarvinay (6)
Hi Smith,

Thanks a lot for your time.

I have tried that method, and also tried using static functions(Singleton) both are working fine. but i want to know whether C++ is providing any feature or there are any other ways to do this.
jsmith (5804)
No, the above is the only way.
kumarvinay (6)
Thank you Smith.
choisum (97)
Make all constructors private, then write a friend function that returns a pointer to
a dynamically allocated instance.


I usually dispense with friend and use a static class functions instead:

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class Foo
{
public:
     static Foo * createInstance() { return new Foo(); }
private:
     Foo() {}
};
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