Which of the following statement is correct about the program given below?

#include<iostream.h> 
class AptitudeCrack
{ 
    public:
    void Aptitude(int x = 15)
    {
        x = x/2; 
        if(x > 0)
            Aptitude(); 
        else
            cout<< x % 2; 
    } 
};
int main()
{
    AptitudeCrack objIB;
    objIB.Aptitude();
    return 0; 
}