Constructor in Inheritance
Default constructor of Base class
• Default Constructor of Base class will be called when object of Derived class
is created.
• If Base class is having nay user-defined constructor then it must also have
user-defined default constructor
Calling Parametrised constructor of Base class
It should be called from constructor of Derived class
Example:
class Cuboid : public Rectangle
{private :
int height;
public:
Cuboid(int lint b, int h); // Base class constructor should not be called from prototype
};
Cuboid::Cuboid(int lint b, int h) : Rectangle(l , b) // calling base class constructor
{height=h;
}
Private member of Base in Derived class Constructor
No. Private members of Base class are not accessible in derived class.
Private members of Base class are inherited to Derived class, but not
accessible.
Copy Constructor by reference
• Copy constructor must take parameter by reference. If it is taking parameter
by value then it has to create an object and it will class constructor again.
• It may become recursive call to the constructor. Constructor calling
constructor.
Private Constructor
