#include <iostream>
using namespace std;

class K
{
    int a;
public:
    K(int x) { a = x; };
    void print() {  cout << " a is: " << a << endl; };
};

class G
{
public:
    static K ob1;
    static void printG()
    {
        ob1.print();
    };
};

int main()
{
    K o1(10);
    G::printG();
    system("pause");
}

K G::ob1;
int main(){ .... }