some basic questions about class

[asdf]

Class Aclass{
int x;
public:
Aclass():x(0){};
};

Aclass B;

Because B is an object of the class Aclass, and x is the private data
member, so, B cannot access
x directly, right? cout<<B.x would be an error.

So, is there any way that I can change the value of x inside the object
B?

Thanks a lot.

 

[Ian Collins]

Class Aclass{
int x;
public:
Aclass():x(0){};
};

Aclass B;

Because B is an object of the class Aclass, and x is the private data
member, so, B cannot access
x directly, right? cout<<B.x would be an error.

Any method of B can access whatever it wants within its self. The user
of B can't.

So, is there any way that I can change the value of x inside the object
B?

Provide a method in Aclass to change it. That's what encapsulation is
all about.