#include <iostream>
#include <string>
#include <cstdlib>
#include <ctime>
using namespace std;
class Circle{
int radious;
public:
Circle(int r) { radious = r ;} // 자동 인라인 함수로 다넣어놓았다.
int getRadious(){return radious;}
void setRadious(int r){radious=r;}
void show(){ cout << "반지름이 " << radious << " 인원" << endl ;}
};
void increaseBy(Circle &a, Circle &b);
int main() {
Circle x(10),y(5);
increaseBy(x,y);
x.show();
return 0;
}
void increaseBy(Circle &a, Circle &b){
int r = a.getRadious() + b.getRadious();
a.setRadious(r);
}