| Цитата(zubikova @ 13.3.2010, 21:58) | | ммм...а не подскажете как тут организовать ввод-вывод данных? |
Ну вот тебе вывод. Ввод делается аналогично.
| Код | #include <iostream>
#include <vector>
#include <memory>
struct Point
{
float X, Y;
Point(float x, float y) : X(x), Y(y) { }
};
class Shape
{
private:
Point _coords;
virtual void PrintInfo() = 0;
public:
Shape(Point coords) : _coords(coords) { }
Point GetCoords() const { return _coords; }
friend std::ostream& operator<<(std::ostream& s, Shape* shape);
};
std::ostream& operator<<(std::ostream& s, Shape* shape)
{
shape->PrintInfo();
return s;
}
class Square : public Shape
{
private:
float _angle;
float _size;
void PrintInfo();
public:
Square(Point coords, float angle, float size) : Shape(coords), _angle(angle), _size(size) { }
void Rotate(float angle) { _angle += angle; }
};
void Square::PrintInfo()
{
std::cout
<< "Square (angle = " << _angle
<< ", size = " << _size
<< ")" << std::endl;
}
class Circle : public Shape
{
private:
float _radius;
void PrintInfo();
public:
Circle(Point coords, float radius) : Shape(coords), _radius(radius) { }
void Scale(float d) { _radius *= d; }
};
void Circle::PrintInfo()
{
std::cout
<< "Circle (radius = " << _radius
<< ")" << std::endl;
}
typedef std::tr1::shared_ptr<Shape> ShapePtr;
typedef std::vector<ShapePtr> ShapeVec;
typedef std::vector<ShapePtr>::iterator ShapeVecIt;
int main()
{
ShapeVec vec;
vec.push_back(ShapePtr(new Square(Point(5, 5), 45, 10)));
vec.push_back(ShapePtr(new Circle(Point(30, 40), 15)));
for (ShapeVecIt it = vec.begin(); it != vec.end(); it++)
std::cout << *it;
return 0;
} |
|