#include
#include<math.h>
using namespace std;
class Circle{
public:
Circle(double r)
{
rin=r;
}
double Area();
~Circle();
private:
double rin;};
int main()
{
Circle c[3]={1,3,5};
int i;
for(i=1;i<=3;i++)
{
cout<<“第”<<i<<“个圆面积为”<<c[i].Area()<<endl;
}
return 0;
}
double Circle ::Area()
{
return 3.14rinrin;
}
Circle::~Circle()
{
cout<<“要努力学C++”<<endl;
}
