C++运算符重载(7) - 赋值操作符能否被继承

#include<iostream>

using namespace std;

class A {
public:
A & operator= (A &a)
{
cout<<" base class assignment operator called ";
return *this;
}
};

class B: public A { };

int main()
{
B a, b;
a.A::operator=(b); //使用子类来调用父类的赋值操作符
return 0;
}