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

#include<iostream.h> 
class Aptitude
{
      int x; 
    public:
      Aptitude();
     ~Aptitude();
      void Show() const;
};
Aptitude::Aptitude()
{
    x = 25;
}
void Aptitude::Show() const
{
    cout<< x;
}
int main()
{
    Aptitude objB;
    objB.Show();
    return 0; 
}