How access class variables in c++

Is it possible in c++ to access class variables in other classes without creating an object. I have tried to use static, but the other class doesnt recognize my variable. I have 3 classes. In two of those the sae variables should be used. In the third class I am changing the values. Would be grateful if you could help. Maybe youve got an exam开发者_C百科ple.

class Myclass
{

    public:
         static int i;
};

int Myclass::i = 10;


class YourClass
{

    public:
        void doSomething()
        {
             Myclass::i = 10;  //This is how you access static member variables
        }

};

int main()
{
    YourClass obj;
    obj.doSomething();
    return 0;
}

static is the right keyword here:

class A {
public:
  static int i; // <-- this is a class variable
};

class B {
public:
  void f() { A::i = 3; } // <-- this is how you access class variables
};

They only potential problem I can think of is that

1. You made the class variable protected or private, thus rendering it inaccessible from other code.
2. You forgot to specify the full scope of the class variable (with A:: in this example).

I think the Singleton Pattern would help, but I'm no big fan of it. A lot better design would be to have one class take ownership of the object, and pass references to this object to the other classes.

yes you can bro, try this

struct car{

        string model;
        string paint;
        int price;


           };


         int main(){

          // creates an object of the class car

            car BMW;

          // assign the values
           bmw.model = "m sports";
            bmw.paint ="red";
            bmw.price = 24000;


              }