c++ - Derived class inherit base class assignment operator?

Question

It seems to me that Derived class don't inherit base class Assignment operator
if Derived class inherit Base class assignment operator , can you please explain the following example

In the following code I am overriding base class operator= in Derived, so that Derived class default assignment operator calls overloaded operator=

#include <iostream>  
using namespace std;      
class Base  
{  
    public:  
    Base(int lx = 0):x(lx)  
    {  
    }  

    virtual Base& operator=( const Base &rhs)  
    {  
        cout << "calling Assignment operator in Base" << endl;  
        return *this;  
    }

    private:  
    int x;     
};      


class Derived : public Base  
{  
    public:  
    Derived(int lx, int ly): Base(lx),y(ly)  
    {  
    }

    Base& operator=(const Base &rhs)  
    {  
        cout << "Assignment operator in Derived"<< endl;  
        return *this;  
    }  

    private:  
    int y;    
};  



int main()  
{  
    Derived d1(10,20);  
    Derived d2(30,40);  
    d1 = d2;  
}  

It gives the output

calling Assignment operator in Base

I have re-written base class operator= into derived class, so if derived class inherits base class operator= then it should be get overridden by operator= (that i have written in derived class), and now Derived class default operator= should call overridden version and not from the base class operator=.

Answer 1

The compiler generates a default assignment operator for Derived (which hides the operator of Base). However, the default assignment operator calls all assignment operators of the class' members and base classes.