c++多态问题，求各种图形的面积

Question

问题遇到的现象和发生背景

c++多态虚函数，指针指代问题，需要使用指针指指代基类

问题相关代码，请勿粘贴截图

#include<iostream>
#define Pi 3.14159
using namespace std;
class CShape{
protected:
 double x,y;
public:
 void set(double i,double j)
 {
  x=i;
  y=j;
 }
 virtual double GetArea()=0;
};

class CTriangle:public CShape{
public:
    double GetArea(){
        return 0.5*x*y;
    }
};

class CRectangle:public CShape{
public:
 double GetArea(){
  return x*y; 
 }
};

class CCircle: public CShape
{ 
 private:
  double radius;
 public:
  CCircle(double r):radius(r){ }
        double GetArea() { return Pi*radius*radius;}  
};

class CSquare: public CShape{
private:
    double side;
public:
    CSquare(double s):side(s){ }
        double GetAre(){ return side*side;}
};

int main()
{
 CShape *c;
 CCircle i(6.6);
 CRectangle r;
 CSquare s(8);
 c=&r;
 c->set(6,6);
 cout<<"CRectangle area:"<<c->GetArea()<<endl;
 c=&i;
 cout<<"CCircle area:"<<c->GetArea()<<endl;
 c=&s;
 cout<<"CSquare are:"<<c->GetArea()<<endl;
 return 0;
}

运行结果及报错内容

报错显示：C:\Users\lenovo\Desktop\c++8\1.cpp In function 'int main()':

我的解答思路和尝试过的方法

我想要达到的结果

想要输出多个种类的面积，并实现面积和

Answer 1

44行的函数名错了GetAre 少了个a 必须要和13行的函数名一致