符号重载返回值的问题

Question

Complex &Complex::operator=(const Complex &x) {
cout << this << endl;
cout << “operator =” << endl;
if (this != &x) {
_real = x._real;
_image = x._image;
}
return *this;
}

听了两遍没听明白Complex &和Complex有什么区别，我打断点看c都是complex对象

Answer 1

quickzhao 2020-06-14 08:14:13

Complex& 和Complex的区别就是传值或返回值是否有对象的副本产生，这就是引用的作用。