单项选择题

若有以下程序:
#include ＜iostream＞
using namespace std;
#define PI 3.14
class Point

private:
int x,y;
public:
Point(int a,int B)

x=a;
y=b;

int getx()

return x;

int gety()

reurn y;

;
class Circle: public Point

private:
int r;
public:
Circle(int a,int b.int C) :Point(a,B)
r=c;
int getr()

return r;

double area()

return PI*r*r;

;
int main()

Circle cl(5,7,10);
cout＜＜c 1 .area()＜＜end1;
return 0;

程序执行后的输出结果是

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