[求助]请高手运行一下看看这个程序错在哪里

新郎

class point{ float x,y; public: Point(float a=0,float b=0){x=a;y=b} void SetP(float a=0,float b=0){x=a;y=b} void Display(){cout<<"位置是：（"<<x<<"，"<<y<<"）\n";} }; class Circle:public Point{ float r; public: Circle(float z=1,float x=0,float y=0){r=z;} void SetC(float z=1,float x=0,float y=0){r=z;SetP(x,y);} void Print() { cout<<"圆的"; Display(); cout<<"圆的半径是："<<r<<endl; } }; void main() { Circle a(3.2); a.Print(); a.SetC(6,8,2); a.Print(); }

秋风扫落叶

.....好多错误
#include <iostream> using std::cout; using std::endl; class Point{ float x,y; public: Point(float a=0,float b=0) { x=a; y=b; } void SetP(float a=0,float b=0){x=a,y=b;} void Display(){cout<<"位置是：（"<<x<<"，"<<y<<"）\n";} }; class Circle:public Point{ float r; public: Circle(float z=1,float x=0,float y=0){r=z;} void SetC(float z=1,float x=0,float y=0){r=z;SetP(x,y);} void Print() { cout<<"圆的"; Display(); cout<<"圆的半径是："<<r<<endl; } }; void main() { Circle a(3,2); a.Print(); a.SetC(6,8,2); a.Print(); }