多态继承封装(三角形矩形圆面积周长

{
e = sqrt((a1-a2)*(a1-a2) + (b1-b2)*(b1-b2));
f = sqrt((a1-a3)*(a1-a3) + (b1-b3)*(b1-b3));
g = sqrt((a3-a2)*(a3-a2) + (b3-b2)*(b3-b2));
}
cc.show();
cout << "圆的半径为:" << r << '\n';
cout << "圆的面积为:" << 3.14 * r * r << '\n';
}
virtual void length()
{
cout << "圆的周长为:" << 2 * 3.14 * r << '\n';
virtual void length ()=0;
};
class CTriangle : public CShape
{
public :
CTriangle(int a1,int b1, int a2, int b2, int a3, int b3):ct1(a1,b1),ct2(a2,b2),ct3(a3,b3)
CRectangle cre(1,1,3,4);
CCircle cci(2,2,3);
Shape(ctr);
Shape(cre);
Shape(cci);
return 0;
}
#include "stdafx.h"
#include "iostream"
#include "cmath"
using namespace std;
class CPoint
{
public :
CPoint(int a = 0, int b = 0)
{
x = a;
{
crecwidth = u;
creclength = v;
}
virtual void area()
{
cout << "\n矩形的左上角坐标为:";
cr.show();
cout << "矩形的面积为:" << (creclength * crecwidth) << '\n';
cout << "三角形的面积为:" << s << '\n';
}
virtual void length()
{
float l = e + f + g;
cout << "三角形的周长为:" << l << '\n';
}
private :
CPointl void length()
{
cout << "矩形的周长为:" << 2 * (creclength + crecwidth) << '\n';
}
private :
float crecwidth;
float creclength;
CPoint cr;
virtual void area()
{
cout << "三角形的坐标为:";
ct1.show();
ct2.show();
ct3.show();
float l = (e + f + g) / 2;
float s = sqrt(l * (l - e) * (l - f) * (l - g));
}
private :
float r;
CPoint cc;
};
void Shape(CShape & k)
{
k.area();
k.length ();
}
int main(int argc, char* argv[])
{
CTriangle ctr(3,0,0,4,0,0);
y = b;
}
void show ()
{
cout << x << ',' << y << '\n';
}
private :
int x;
int y;
};
class CShape
{
public :
virtual void area()=0;
};
class CCircle : public CShape
{
public :
CCircle(int x, int y, float r):cc(x,y)
{
this ->r = r;
}
virtual void area()
{
cout << "\n圆心的坐标为:";
CPoint ct2;
CPoint ct3;
float e;
float f;
float g;
};
class CRectangle :public CShape
{
public :
CRectangle (int x, int y, float u, float v):cr (x,y)