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38 lines
590 B
38 lines
590 B
/* File : example.h */
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class Shape
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{
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public:
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Shape() { nshapes++; }
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virtual ~Shape() { nshapes--; };
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double x, y;
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void move(double dx, double dy);
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virtual double area(void) = 0;
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virtual double perimeter(void) = 0;
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static int nshapes;
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};
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class Circle : public Shape
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{
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private:
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double radius;
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public:
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Circle(double r)
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: radius(r){};
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virtual double area(void);
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virtual double perimeter(void);
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};
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class Square : public Shape
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{
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private:
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double width;
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public:
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Square(double w)
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: width(w){};
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virtual double area(void);
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virtual double perimeter(void);
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};
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