40 lines
611 B
C
40 lines
611 B
C
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/* File : example.h */
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class Shape {
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public:
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Shape() {
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nshapes++;
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}
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virtual ~Shape() {
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nshapes--;
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};
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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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private:
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double radius;
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public:
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Circle(double r) : 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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private:
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double width;
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public:
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Square(double w) : 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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