C++编程 编写一个名为ScreenElement抽象基类，...-c++编程题（实现一个 Shape 类层次， Sha

class Shape
{
public:
Shape();
virtual ~Shape();

virtual void draw() = 0;
virtual void resize() = 0;

private:
};

Shape::Shape()
{

}

Shape::~Shape()
{

}

class Point : public Shape
{
public:
Point();
virtual ~Point();

virtual void draw();
virtual void resize();

private:
};

Point::Point()
{

}

Point::~Point()
{

}

void Point::draw()
{
std::cout << "i draw one point" << std::endl;
}

void Point::resize()
{
std::cout << "resize point size" << std::endl;
}

class Line : public Shape
{
public:
Line();
virtual ~Line();

virtual void draw();
virtual void resize();

private:
};

Line::Line()
{

}

Line::~Line()
{

}

void Line::draw()
{
std::cout << "i draw one line" << std::endl;
}

void Line::resize()
{
std::cout << "i resize line size" << std::endl;
}

int _tmain(int argc, _TCHAR* argv[])
{
Shape* lpPoint = new Point;
lpPoint->draw();
lpPoint->resize();
delete lpPoint;
lpPoint = NULL;

Shape* lpLine = new Line;
lpLine->draw();
lpLine->resize();
delete lpLine;
lpLine = NULL;

// add other shapes here
//Shape* lpCricle = new Circle;

return 0;
}

还有其他的几个形状，按照e68a847a686964616f333point和line来加就行了