第十周实验报告 任务三

#include<iostream>

#include<Cmath>

#define P 3.14

using namespace std;

class Point //定义坐标点类
{
protected:

double x, y;   //点的横坐标和纵坐标

public:

Point(double x0, double y0):x(x0), y(y0){}

~Point(){}

double getx()
{
return x;
}

double gety()
{
return y;
}
};

class Circle: public Point//定义圆类
{
protected:

double r;//定义圆的半径

public:

Circle(double x0, double y0, double r0):Point(x0, y0),r(r0){}

~Circle(){}

double getr()
{
return r;
}

double Area()
{
return P * getr() * getr();
}

double Grith()
{
return P * getr() * 2;
}

};

class Cylinder:public Circle//定义圆柱类
{
protected:

double h;//定义圆柱类的高

public:

Cylinder(double x0, double y0, double r0, double h0):Circle(x0, y0, r0), h(h0){}

~Cylinder(){}

double geth()
{
return h;
}

double Volume()
{
return Area() * h;
}

double WArea()
{
return (2 * Area() + Grith() * h);
}

/*	friend istream& operator >> (istream& input, Cylinder &c1)
{
cout << "请输入一个圆柱底面○的圆心坐标(x和y之间用空格隔开):";

input >> c1.x >> c1.y;

cout << endl;

cout << "请输入一个圆柱底面○的半径:";

input >> c1.r;

cout << endl;

cout << "请输入一个圆柱的高";

input >> c1.h;

return input;
}
*/
friend ostream& operator << (ostream& output, Cylinder &c1)
{
output << "圆柱底面○的圆心为:" << "(" << c1.getx() << "," << c1.gety() << ")" << endl;

output << "圆柱底面○的半径为:" << c1.getr() << endl;

output << "圆柱底面○的面积为:" << c1.Area() << endl;

output << "圆柱底面○的周长为:" << c1.Grith() << endl;

output << "圆柱的高为:" << c1.geth() <<endl;

output << "圆柱的表面积为:" << c1.WArea() << endl;

output << "圆柱的体积为:" <<c1.Volume() << endl;

return output;
}
};

int main()
{
Cylinder c(0, 1, 2, 3);

cout << c;

system("pause");

return 0;
}