A

#include<iostream>
#include<string>
using namespace std;
class Person{
private: string name,addr,phone;
public: Person(string n, string a, string p) {name=n; addr=a; phone=p;}
                
                void setname(string n){name=n;}
                void setaddr(string a){addr=a;}
                void setphone(string p){phone=p;}
                string getname(){return name;}
                string getaddr(){return addr;}
                string getphone(){return phone;}
};

class Customer : public Person{
private: string cnum;
                 int point;
public:
        Customer(string n, string a, string p, string c):Person(n,a,p)
        {
         cnum=c;
        }
        void setcnum(string c){cnum=c;}
        void setpoint(int p){point=p;}
        string getcnum(){return cnum;}
        int getpoint(){return point;}
};

int main()
{
        Person per("강하늘", "서울시", "02-123-1230");
        cout<<"이름 : "<<per.getname()<<", 주소 : "<<per.getaddr()<<", 전화번호 : "
                <<per.getphone()<<endl;
        
        Customer cus("이겨울", "인천", "02-112", "c-100");
        cus.setpoint(500);
        cout<<"이름 : "<<cus.getname()<<", 주소 : "<<cus.getaddr()<<", 전화번호 : "
                <<cus.getphone()<<", 고객번호 : "<<cus.getcnum()<<", 마일리지 : "<<cus.getpoint()<<endl;
}