day4 C++

作业

取余运算符重载

#include <iostream>

using namespace std;

class Stu
{
    //使用friend关键字是全局函数operator%可以访问类私有成员变量
    friend const Stu operator%(const Stu &other1,const Stu &other2);
private:
    int a;
    int b;
public:
    Stu(){}
    Stu(int a,int b):a(a),b(b){}

    //成员函数完成取余
//    const Stu operator%(const Stu &other) const
//    {
//        Stu temp;
//        temp.a=a%other.a;
//        temp.b=b%other.b;
//        return temp;
//    }

    void show()
    {
        cout << "a=" << a <<endl;
        cout << "b=" << b <<endl;
    }
};

//全局函数实现取余
const Stu operator%(const Stu &other1,const Stu &other2)
{
    Stu temp;
    temp.a=other1.a % other2.a;
    temp.b=other1.b % other2.b;
    return temp;
}

int main()
{
    Stu s1(2,4);
    Stu s2(3,3);
    Stu s3=s1%s2;
    s3.show();
    return 0;
}

乘法运算符重载

#include <iostream>

using namespace std;

class Stu
{

    friend const Stu operator*(const Stu &other1,const Stu &other2);
private:
    int a;
    int b;
public:
    Stu(){}
    Stu(int a,int b):a(a),b(b){}
//    const Stu operator*(const Stu &other) const
//    {
//        Stu temp;
//        temp.a=a*other.a;
//        temp.b=b*other.b;
//        return temp;
//    }

    void show()
    {
        cout << "a=" << a <<endl;
        cout << "b=" << b <<endl;
    }
};

const Stu operator*(const Stu &other1,const Stu &other2)
{
    Stu temp;
    temp.a=other1.a * other2.a;
    temp.b=other1.b * other2.b;
    return temp;
}

int main()
{
    Stu s1(2,4);
    Stu s2(3,3);
    Stu s3=s1*s2;
    s3.show();
    return 0;
}