Q1: What will be the output of the following program?

#include<iostream.h> 
class AptitudeCrack
{
    int x, y, z; 
    public:
    void Apply(int xx = 12, int yy = 21, int zz = 9)
    {
        x = xx;
        y = yy += 10;
        z = x -= 2;
    }
    void Display(void)
    {
        cout<< x << ' ' << y << endl; 
    } 
    void SetValue(int xx, int yy)
    {
        Apply(xx, 0, yy);
    }
};
int main()
{
    AptitudeCrack *pAptitude= new AptitudeCrack;
   (*pAptitude).SetValue(12, 20);
    pAptitude->Display();
    delete pAptitude;
    return 0; 
}