#include <iostream>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
class Circle{
private :
int radius;
public:
Circle();
~Circle();
void setRadius(int r){
radius=r;
}
double getArea() {
return 3.14*radius*radius;
}
};
Circle:: Circle(){
radius=1;
}
int main(int argc, char** argv) {
int num;
int radius;
int count=0;
cout << "생성하고자 하는 원의 개수 ? ";
cin>> num;
Circle *circle=new Circle [num];
for(int i=0; i<num;i++){
cout <<"원"<<i<<":";
cin >> radius;
circle[i].setRadius(radius);
}
for(int i=0; i<num; i++){
cout << circle[i].getArea()<< " ";
}
for(int i=0; i<num; i++){
if(circle[i].getArea()>=100 && circle[i].getArea()<=200)
count++;
}
cout <<"면적이 100에서 200 사이인 원의 개수는 " << count ;
return 0;
}