OOP Test

#include <cstdlib>
#include <iostream>

class A{
public:
    int a;
    virtual void f() {printf("Called from A\n");};

    A(int j){
        a = j;
        printf("A initialize = %d\n", a);
    }
};

class B: public A{
public:
    int a;
    virtual void f() {printf("Called from B\n");};

    B(int j) : A(j)
    {
        a = j;
        printf("B initialize = %d\n", a);
    }
};

int main()
{
    A *a = new B(1024);
    a->f();
    a = new A(a->a/100);
    a->f();
    a->A::a = 10;
    printf("\n\n\n%d\n\n\n", a->A::a);
    getchar();
}