C++运算符重载(7) - 赋值操作符能否被继承?可以

赋值操作符也可以被继承。

基类的操作符可以被子类访问使用

例子如下

#include <iostream>
using namespace std;
//操作符能否被继承??

class A {
public:
A& operator=(const A& obj) {
cout << "the = operator called!" << endl;
return *this;
}
};

class B: public A{
private:
int data;

public:
B(int data) {
this->data = data;
}

void printNum() {
cout << this->data << endl;
}
};

int main() {
B a(10), b(20);
a = b;

a.printNum();
b.printNum();

system("PAUSE");
return 0;
}

输出: 

base class assignment operator called