C++基础 -16- 类的继承

#include "iostream"

using namespace std;

class person
{
    public:
    person(int a,int b):a(a),b(b)
    {
        cout << "person-build" << endl;
    }
    protected:
    int a;
    int b;
};

class newperson:public::person
{
    public:
    newperson(int a,int b):person(a,b)
    {
      cout << "newperson-build" << endl; 
    }

    void showperson()
    {
        cout << this->a << endl;      
        cout << this->b << endl;   
    }

    void setpreson(int a,int b)
    {
        this->a=a;
        this->b=b;
    }

};



int main()
{
    newperson rlxy(10,20);
    rlxy.showperson();
    rlxy.setpreson(50,60);
    rlxy.showperson();


}