Thread: I summarize the initialization places of various variables

I summarize the initialization places of various variables, would somebody check if it's correct?

1,2 or 3 cases will be explained later

__________________static_________const____________ _static const
integral____________2____________3________________ ___1 or 2
non-integral_______ 2____________3_____________________2

1. declaration place
Example:

Code:

class A{                                                                        
public:                                                                         
    void foo();                                                                 
    static const int x=1; 
    A(){}                                                                       
};

2. out of class
Example:

Code:

class A{                                                                        
public:                                                                         
    void foo();                                                                 
    static const string s; 
    A(){}                                                                       
}; 

const string A::s = "";

3. initialization list
Example:

Code:

class A{                                                                        
public:                                                                         
    void foo();                                                                 
    const int x; 
    A():x(1){}                                                                       
};

Sounds right.