通过重载运算符,实现用运算符操作自定义的数据类型。
语法:一个正常的成员函数 把函数名改为operator加上一个操作符。
情况一(用成员函数重载运算符):
#include<iostream>
using namespace std;
class Person
{
public:Person operator+(Person &p){Person temp;temp.m_A=this->m_A+p.m_A;temp.m_B=this->m_B+p.m_B;return temp;}int m_A;int m_B;
};
void test01()
{Person p1;p1.m_A=10;p1.m_B=10;Person p2;p2.m_A=10;p2.m_B=10;Person p3=p1+p2; //简化了p3=p1.operator+(p2);cout<<p3.m_A<<" "<<p3.m_B<<" "<<endl;
}
int main()
{test01();
}
情况二(用全局函数重载运算符):
#include<iostream>
using namespace std;
class Person
{
public:int m_A;int m_B;
};
Person operator+(Person &p1,Person &p2)
{Person temp;temp.m_A=p1.m_A+p2.m_A;temp.m_B=p1.m_B+p2.m_B;return temp;
}
void test01()
{Person p1;p1.m_A=10;p1.m_B=10;Person p2;p2.m_A=10;p2.m_B=10;Person p3=p1+p2; //简化了p3=operator+(p1,p2);cout<<p3.m_A<<" "<<p3.m_B<<" "<<endl;
}
int main()
{test01();
}