static in the class

[jacksparrow]

whats wrong with my code
why it doesnt work i got some errors
it should output in the end x=3 and y=3 in the end of the program

# include <iostream>
using namespace std;
void sFune();
void main()
{ for (int i=0; i<3; i++)
 sFune();
}

void sFune ()
{
    static int x=2;
    int y=2;
    x++;
    y++;
    cout << " X = "<<x<<endl;
    cout << " Y = "<<y<<endl;
}

    class secretclass

    {

    public : 
        void set ( int a)
        {
            y = a;
        }

        void printY()
        {
            cout <<y<<endl;
        }

        static void PrintNum ()
        {
            cout <<num<<endl;
        }

        static void increase(int n)
        {
            num+=n;
        }

        secretclass ( int a=0)
        {
            y=0;
            num ++;
        }

    private :
        int y;
        static int num;
    };

    int secretclass::num=10;

    int main ()
    {
        secretclass obj1(50);
        secretclass::PrintNum();
        secretclass.obj2 (20)
        secretclass::PrintNum();
        obj1.increase(5);
        obj2.increase(2);
        obj1.printY();
        obj2.printY();
        secretclass::increase(10);
        obj1.PrintNum();
        return 0;
    }