C++--重载:复数加减法

测试代码

#include<iostream>
using namespace std;
class complex{
public:
	complex(double a=0.0,double b=0.0):a(a),b(b){}
	~complex(){cout<<"调用析构函数！"<<endl;}
	complex operator + (const complex &c1) const
	{
		return complex(a+c1.a,b+c1.b);
	}

complex operator - (const complex &c1) const
	{
		return complex(a-c1.a,b-c1.b);
	}
void show()
{
	cout<<"a="<<a<<"  c="<<b<<endl;
}

private:
	double a;
	double b;
};
int main()
{

	complex c1(1,2);
complex c2(3,2);
complex  c3;
c3=c1+c2;
c3.show();
	return 0;
}

测试结果