调入 op+

#include<iostream>
using namespace std;

class Complex
{
public:
	int a;
	int b;
public:
	Complex(int a = 0, int b = 0)
	{
		this->a = a;
		this->b = b;
	}
	void printfCom()
	{
		cout << a << "+" << b << "i" << endl;
	}

};
Complex myAdd(Complex& c1, Complex& c2)
{
	//Complex tmp(1, 2);
	Complex tmp(c1.a+c2.a, c1.b+c2.b);
	return tmp;

}
void main()
{
	int a = 0, b = 0;
	int c;
	c = a + b;//编译器知道如何进行加减
	//a+bi 复数运算规则
	Complex c1(1, 2), c2(3, 4);
	Complex c3;
	//c3 = c1 + c2;//类也是数据类型 用户自定义数据类型 c++ 编译器不知道如何运算
	//提供自定义运算符操作-》运算重载

	//步骤：
	Complex c4=myAdd(c1, c2);
	c4.printfCom();
	return;
}

//运算符重载 本质：函数
//根据类型找函数调用
//Complex opreat+(Complex& c1, Complex& c2)
//{
//	//Complex tmp(1, 2);
//	Complex tmp(c1.a + c2.a, c1.b + c2.b);
//	return tmp;
//
//}